Add jobs to api-wg repo

The intent of this patch is to do the following:

  - set up a check and gate job for py27 and docs
  - if merged successfully, then publish the docs to:
    specs.o.org/openstack/api-wg

Change-Id: I52dd86899c175c28999a338fa51cd8c8133d0430
Merge "Add jobs to api-wg repo"