docs: update generated docs (#1053)

Updates for both discovery docs and epydoc API Documentation

Fixes: #1049
diff --git a/docs/dyn/compute_alpha.vpnGateways.html b/docs/dyn/compute_alpha.vpnGateways.html
index 124bce4..ccbbdf4 100644
--- a/docs/dyn/compute_alpha.vpnGateways.html
+++ b/docs/dyn/compute_alpha.vpnGateways.html
@@ -81,6 +81,9 @@
   <code><a href="#aggregatedList_next">aggregatedList_next(previous_request, previous_response)</a></code></p>
 <p class="firstline">Retrieves the next page of results.</p>
 <p class="toc_element">
+  <code><a href="#close">close()</a></code></p>
+<p class="firstline">Close httplib2 connections.</p>
+<p class="toc_element">
   <code><a href="#delete">delete(project, region, vpnGateway, requestId=None)</a></code></p>
 <p class="firstline">Deletes the specified VPN gateway.</p>
 <p class="toc_element">
@@ -156,6 +159,7 @@
             &quot;vpnInterfaces&quot;: [ # A list of interfaces on this VPN gateway.
               { # A VPN gateway interface.
                 &quot;id&quot;: 42, # The numeric ID of this VPN gateway interface.
+                &quot;interconnectAttachment&quot;: &quot;A String&quot;, # URL of the interconnect attachment resource. When the value of this field is present, the VPN Gateway will be used for IPsec over Interconnect; all Egress or Ingress traffic for this VPN Gateway interface will go through the specified interconnect attachment resource.
                 &quot;ipAddress&quot;: &quot;A String&quot;, # [Output Only] The external IP address for this VPN gateway interface.
               },
             ],
@@ -209,6 +213,11 @@
 </div>
 
 <div class="method">
+    <code class="details" id="close">close()</code>
+  <pre>Close httplib2 connections.</pre>
+</div>
+
+<div class="method">
     <code class="details" id="delete">delete(project, region, vpnGateway, requestId=None)</code>
   <pre>Deletes the specified VPN gateway.
 
@@ -318,6 +327,7 @@
     &quot;vpnInterfaces&quot;: [ # A list of interfaces on this VPN gateway.
       { # A VPN gateway interface.
         &quot;id&quot;: 42, # The numeric ID of this VPN gateway interface.
+        &quot;interconnectAttachment&quot;: &quot;A String&quot;, # URL of the interconnect attachment resource. When the value of this field is present, the VPN Gateway will be used for IPsec over Interconnect; all Egress or Ingress traffic for this VPN Gateway interface will go through the specified interconnect attachment resource.
         &quot;ipAddress&quot;: &quot;A String&quot;, # [Output Only] The external IP address for this VPN gateway interface.
       },
     ],
@@ -389,6 +399,7 @@
   &quot;vpnInterfaces&quot;: [ # A list of interfaces on this VPN gateway.
     { # A VPN gateway interface.
       &quot;id&quot;: 42, # The numeric ID of this VPN gateway interface.
+      &quot;interconnectAttachment&quot;: &quot;A String&quot;, # URL of the interconnect attachment resource. When the value of this field is present, the VPN Gateway will be used for IPsec over Interconnect; all Egress or Ingress traffic for this VPN Gateway interface will go through the specified interconnect attachment resource.
       &quot;ipAddress&quot;: &quot;A String&quot;, # [Output Only] The external IP address for this VPN gateway interface.
     },
   ],
@@ -513,6 +524,7 @@
         &quot;vpnInterfaces&quot;: [ # A list of interfaces on this VPN gateway.
           { # A VPN gateway interface.
             &quot;id&quot;: 42, # The numeric ID of this VPN gateway interface.
+            &quot;interconnectAttachment&quot;: &quot;A String&quot;, # URL of the interconnect attachment resource. When the value of this field is present, the VPN Gateway will be used for IPsec over Interconnect; all Egress or Ingress traffic for this VPN Gateway interface will go through the specified interconnect attachment resource.
             &quot;ipAddress&quot;: &quot;A String&quot;, # [Output Only] The external IP address for this VPN gateway interface.
           },
         ],