Adding openstackwatch rss functionality to be available to gerrit.

Adding openstackwatch.py to the cmd directory.
Creating directory jeepyb/config for the openstackwatch.ini file.
Adding the openstackwatch.ini-sample file.

Fixes bug #1136069

Change-Id: Icc5d41d10d893e0b7ed048d99cfcb9c5e7f91f30
Reviewed-on: https://review.openstack.org/23176
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins