Fix default nova node names in Grizzly
Fix default nova node names in Grizzly

Folsom compute node names are unqualified in the database, Grizzly
qualifies them with the value of dhcp_domain.  In the migration
we'll unset that for now.

Bug 1160072

Change-Id: I176cace9c5319265944c276d5c8eae704e99f671

openstack-dev/grenade,openstack-dev/grenade,dtroyer/grenade,dtroyer/grenade