Add configure-unbound role to base-test job
Add configure-unbound role to base-test job

This job redirects unbound to ipv4 or ipv6 servers depending on the
interfaces available.  This was originally implemented with
I885418e07265002b09592c3cf3aff9712c6e001f but moved into ansible with
the dependent change.  A follow-on will add to the base job after
testing.

Depends-On: I70b41e45f3d53b191742533c2f3b6c0b6e6c2339
Change-Id: I6783a5e00e3e9b06d35c281df6f72d4510409069

openstack-infra/project-config,openstack-infra/project-config