A few sysctl values are required for networking to work. All of them
are documented at docs.openstack.org and while some of them are the
defaults on systems, they should be explicitly set since networking
will break without them set.

Change-Id: I4507eb2602e52eeab61bdceea4c94b1c35696a7d
Closes-Bug: #1482794

The previous patch (I92f2eac895283791b2eea6a4351a43e90fdbb5a3) didn't
fix it because of the ceph patch that merged.

Change-Id: I82207f5cc684f7c180e301cac69fcc98fca63268
Partially-Implements: blueprint replace-config-external

This implements all the openstack pieces needed to make ceph work.

DocImpact
Change-Id: I1d24476a966602cf955e5ef872b0efb01319894a
Partially-Implements: blueprint ceph-container
Implements: blueprint kolla-live-migration

Change-Id: I865b3f4c63520ec318c8b50f4ba60b5715d283ee
Partially-Implements: blueprint replace-config-external

Change-Id: I92f2eac895283791b2eea6a4351a43e90fdbb5a3
Partially-Implements: blueprint replace-config-external

Change-Id: I38c545484a7b1f3906d844eb3a7486e11c4b276a
Partially-Implements: blueprint replace-config-external

Initial support for Nova in Ansible

Partially-Implements: blueprint ansible-service

Change-Id: I4b0a74bd3e5daa5664f5e1e622bfb40c3285949e