autotest: dev_server.py increase timeouts for ssh-wrapped calls

BUG=chromium:620485
TEST=None

Change-Id: I7231141a24532fccf22e3aa0e9d8ac58ee8679a6
Reviewed-on: https://chromium-review.googlesource.com/353551
Reviewed-by: Dan Shi <dshi@google.com>
Tested-by: Aviv Keshet <akeshet@chromium.org>
diff --git a/client/common_lib/cros/dev_server.py b/client/common_lib/cros/dev_server.py
index 2fb90ac..b78f954 100644
--- a/client/common_lib/cros/dev_server.py
+++ b/client/common_lib/cros/dev_server.py
@@ -252,7 +252,8 @@
 
 
     @classmethod
-    def get_devserver_load(cls, devserver, timeout_min=0.1):
+    def get_devserver_load(cls, devserver,
+                           timeout_min=DEVSERVER_SSH_TIMEOUT_MINS):
         """Returns True if the |devserver| is healthy to stage build.
 
         @param devserver: url of the devserver.
@@ -332,7 +333,8 @@
 
 
     @classmethod
-    def devserver_healthy(cls, devserver, timeout_min=0.1):
+    def devserver_healthy(cls, devserver,
+                          timeout_min=DEVSERVER_SSH_TIMEOUT_MINS):
         """Returns True if the |devserver| is healthy to stage build.
 
         @param devserver: url of the devserver.
@@ -1271,7 +1273,7 @@
         self._stage_artifacts(image, artifacts, files, archive_url)
 
 
-    @remote_devserver_call(timeout_min=0.5)
+    @remote_devserver_call(timeout_min=DEVSERVER_SSH_TIMEOUT_MINS)
     def list_image_dir(self, image):
         """List the contents of the image stage directory, on the devserver.