Remove redstack references
Remove redstack references

the trove-integration project has been rehomed in the trove repo
with a new name: trovestack

This changes the names to the new one.

Change-Id: I3f05f75456551bc80f013b1f5ab22d6f2f7f4e42

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals