TST: pin versions on 3.5 rather than 2.7.

Author: tswast

ci/requirements-2.7-0.19.2.pip

@@ -1,7 +1,7 @@
-google-api-python-client==1.6.0
-google-auth==1.0.0
-google-auth-httplib2==0.0.1
-google-auth-oauthlib==0.0.1
+google-api-python-client
+google-auth
+google-auth-httplib2
+google-auth-oauthlib
 PyCrypto
-python-gflags==2.0
+python-gflags
 mock

ci/requirements-3.5-0.18.1.pip

@@ -1,5 +1,5 @@
-google-api-python-client
-google-auth
-google-auth-httplib2
-google-auth-oauthlib
+google-api-python-client==1.6.0
+google-auth==1.0.0
+google-auth-httplib2==0.0.1
+google-auth-oauthlib==0.0.1
 mock