static: provide git services

This creates the redirect sites

 git.airshipit.org
 git.openstack.org
 git.starlingx.io
 git.zuul-ci.org

The htaccess rules are put into the main configuration file to avoid
having to create a directory and manage another file.  We use a macro
to duplicate the rules and retain the old semantics of the http site
redirecting directly (as opposed to doing a extra 301 to
https://git.openstack.org first).  This required adding "/" to the "^"
matches as it now runs in VirtualHost context; no functional change is
intended over the old sites.

This will require _acme-challenge CNAMEs to acme.opendev.org before
being merged.

testinfra is updated to exercise some redirects matching against the
results of the extant sites.

Change-Id: Iaa9d5dc2af3f5f8abc11c2312e4308b50f5fcd2b

playbooks/host_vars/static01.opendev.org.yaml

@@ -13,6 +13,14 @@ letsencrypt_certs:
     - docs.openstack.org
   static01-docs-starlingx-io:
     - docs.starlingx.io
+  static01-git-airshipit-org:
+    - git.airshipit.org
+  static01-git-openstack-org:
+    - git.openstack.org
+  static01-git-starlingx-io:
+    - git.starlingx.io
+  static01-git-zuul-ci-org:
+    - git.zuul-ci.org
   static01-governance-openstack-org:
     - governance.openstack.org
   static01-service-types-openstack-org: