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: I1e33651ec6b9c86cf32c8adbafdf99cc4e148a85

playbooks/zunclient-devstack-docker-sql/run.yaml

@@ -17,7 +17,7 @@
               dest: devstack-gate
           EOF
           /usr/zuul-env/bin/zuul-cloner -m clonemap.yaml --cache-dir /opt/git \
-              git://git.openstack.org \
+              https://git.openstack.org \
               openstack-infra/devstack-gate
         executable: /bin/bash
         chdir: '{{ ansible_user_dir }}/workspace'
@@ -29,7 +29,7 @@
           set -x
           cat << 'EOF' >>"/tmp/dg-local.conf"
           [[local|localrc]]
-          enable_plugin zun git://git.openstack.org/openstack/zun
+          enable_plugin zun https://git.openstack.org/openstack/zun
 
           EOF
         executable: /bin/bash