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: I091a2c6e17f778d857c39be51bf2a3c9e4f7ab77

.zuul.yaml

@@ -49,9 +49,9 @@
       - zuul: openstack/horizon
     vars:
       devstack_plugins:
-        sahara: 'git://git.openstack.org/openstack/sahara'
-        sahara-dashboard: 'git://git.openstack.org/openstack/sahara-dashboard'
-        heat: 'git://git.openstack.org/openstack/heat'
+        sahara: 'https://git.openstack.org/openstack/sahara'
+        sahara-dashboard: 'https://git.openstack.org/openstack/sahara-dashboard'
+        heat: 'https://git.openstack.org/openstack/heat'
       devstack_services:
         horizon: true
         tls-proxy: false

README.rst

@@ -23,7 +23,7 @@ How to use with devstack:
 
 Add the following to your devstack ``local.conf`` file::
 
-    enable_plugin sahara-dashboard git://git.openstack.org/openstack/sahara-dashboard
+    enable_plugin sahara-dashboard https://git.openstack.org/openstack/sahara-dashboard
 
 
 To run unit tests: