Don't run neutron/heat jobs for glance_store

Currently glance_store is running all the jobs that glance runs. I think
these jobs are way more than what we need to test the library and they
may be wasting some resources in the gate. The patch proposes to run
just tempest and full jobs, which removes large-ops, heat and neutron
jobs.

Change-Id: Ib8525629277803473e5c7d9fdd402d1738b3b2e3
Merge "Don't run neutron/heat jobs for glance_store"