Better utilize caching and proxy resources available in the gate.

Please do not merge yet! (This points at a snapstack branch)

Use git.openstack.org where possible instead of github.

Use zuul proxy for git.openstack.org.

Change-Id: I40528628199dd7da93a5e78d3a1327948ca0439e

snapcraft.yaml

@@ -29,7 +29,7 @@ parts:
   keystone:
     plugin: python
     python-version: python2
-    source: http://tarballs.openstack.org/keystone/keystone-stable-ocata.tar.gz
+    source: https://tarballs.openstack.org/keystone/keystone-stable-ocata.tar.gz
     python-packages:
       - mysql-python
       - pymysql
@@ -56,7 +56,7 @@ parts:
   config:
     after: [keystone]
     plugin: dump
-    source: http://tarballs.openstack.org/keystone/keystone-stable-ocata.tar.gz
+    source: https://tarballs.openstack.org/keystone/keystone-stable-ocata.tar.gz
     organize:
       etc/*.conf: etc/keystone/
       etc/*.ini: etc/keystone/

tox.ini

@@ -16,7 +16,7 @@ whitelist_externals =
 [testenv:snap]
 deps =
     -r{toxinidir}/requirements.txt
-    git+https://github.com/openstack-snaps/snapstack
+    git+https://github.com/openstack-snaps/snapstack@feature/gate-proxy-support
     pytest
 commands =
     py.test -s tests/