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: I2b9fb7f781435016acc33a2bfef8be1d26ca2f9a

README.rst

@@ -45,7 +45,7 @@ How do I submit the code?
 
 #. Get the code::
 
-     git clone git://git.openstack.org/openstack/ironic-staging-drivers
+     git clone https://git.openstack.org/openstack/ironic-staging-drivers
 
 #. Make your changes and write a nice commit message explaining the
    change in details.

extra-requirements.txt

@@ -1 +1 @@
-git+git://git.openstack.org/openstack/ironic#egg=ironic
+git+https://git.openstack.org/openstack/ironic#egg=ironic

playbooks/legacy/ironic-staging-drivers-dsvm-all-drivers/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'
@@ -29,8 +29,8 @@
           set -x
           cat << 'EOF' >>"/tmp/dg-local.conf"
           [[local|localrc]]
-          enable_plugin ironic git://git.openstack.org/openstack/ironic
-          enable_plugin ironic-staging-drivers git://git.openstack.org/openstack/ironic-staging-drivers
+          enable_plugin ironic https://git.openstack.org/openstack/ironic
+          enable_plugin ironic-staging-drivers https://git.openstack.org/openstack/ironic-staging-drivers
           IRONIC_BUILD_DEPLOY_RAMDISK=False
 
           EOF