Add neutron full job to integrated gate

This change will add the neutron full job to the integrated gate,
leaving it as non-voting.

As time is ripe to switch this job to voting, it makes sense to add
it, in its current form, to the integrated gate so that it's executed
also with projects different from neutron, devstack and tempest.

Change-Id: I7f2c82c994d7fc93733deb1f82c6910335589b85
Merge "Add neutron full job to integrated gate"