Added first mock job and some improvements

* ovirt-hosted-engine-ha create-rpms jobs for merged patches
* Added README with some info on the organization
* Generic mock build scripts and yamls for other jobs to reuse

Change-Id: Id77cc184adadbd3b8daa54b3b9428da511496340
Signed-off-by: David Caro <dcaroest@redhat.com>