Replace openstack.org git:// URLs with https://

This is a mechanically generated change to replace openstack.org
git:// URLs with https:// equivalents.

This is in aid of a planned future move of the git hosting
infrastructure to a self-hosted instance of gitea (https://gitea.io),
which does not support the git wire protocol at this stage.

This update should result in no functional change.

For more information see the thread at

 http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003825.html

Change-Id: Ia8f139408e0b3b88cdaef44d99301c46772a3f92

tests/tests-repo-clone.sh

@@ -66,7 +66,7 @@ if [[ -x /usr/zuul-env/bin/zuul-cloner ]] && [[ "${ZUUL_REF:-none}" != "none" ]]
     /usr/zuul-env/bin/zuul-cloner \
         --cache-dir /opt/git \
         --map ${TESTING_HOME}/tests-clonemap.yaml \
-        git://git.openstack.org \
+        https://git.openstack.org \
         openstack/openstack-ansible-tests
 
     # Clean up the clonemap.