Refresh all docs (#298)

Change the discovery query to fetch all discovery docs, not just the
preferred ones.
diff --git a/docs/dyn/compute_v1.routers.html b/docs/dyn/compute_v1.routers.html
index 821acf9..155ca21 100644
--- a/docs/dyn/compute_v1.routers.html
+++ b/docs/dyn/compute_v1.routers.html
@@ -142,7 +142,7 @@
           { # Router resource.
               "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
               "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-              "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+              "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
                 {
                   "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
                   "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -277,7 +277,7 @@
     { # Router resource.
       "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
       "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-      "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+      "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
         {
           "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
           "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -430,7 +430,7 @@
 { # Router resource.
     "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
       {
         "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -542,7 +542,7 @@
       { # Router resource.
           "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
           "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-          "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+          "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
             {
               "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
               "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -604,7 +604,7 @@
 { # Router resource.
     "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
       {
         "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -697,7 +697,7 @@
 { # Router resource.
     "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
       {
         "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -733,7 +733,7 @@
     "resource": { # Router resource. # Preview of given router.
         "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
         "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-        "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+        "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
           {
             "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
             "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.
@@ -777,7 +777,7 @@
 { # Router resource.
     "kind": "compute#router", # [Output Only] Type of resource. Always compute#router for routers.
     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
-    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel) or IP address and IP address range (e.g. ipRange).
+    "interfaces": [ # Router interfaces. Each interface requires either one linked resource (e.g. linkedVpnTunnel), or IP address and IP address range (e.g. ipRange), or both.
       {
         "linkedVpnTunnel": "A String", # URI of linked VPN tunnel. It must be in the same region as the router. Each interface can have at most one linked resource.
         "ipRange": "A String", # IP address and range of the interface. The IP range must be in the RFC3927 link-local IP space. The value must be a CIDR-formatted string, for example: 169.254.0.1/30. NOTE: Do not truncate the address as it represents the IP address of the interface.