In order to disable libvirt debug in CI (which takes vast amount of storage)
this change introduces nova_libvirt_logging_debug and disables that in CI.

Change-Id: I90bfd1b300ad3202ea4d139fda6d6beb44c5820f

Change-Id: I173669bdf92b1f2ea98907ba16808ca3c914944c

Change-Id: Ibbb962b035b695eec022566cf9f7d6c200480c45

The idea is to factor out a role for deploying Nova related services
to cells. Since all deployments use cells, this role can be used
in both regular deployments which have just cell0 and cell1,
and deployments with many cells.

Partially Implements: blueprint support-nova-cells
Change-Id: Ib1f36ec0a773c384f2c1eac1843782a3e766045a

To securely support live migration between computenodes we should enable
tls, with cert auth, instead of TCP with no auth support.

Implements: blueprint libvirt-tls

Change-Id: I22ea6233933c840b853fdcc8e03400b2bf577271

Two new parameters (migration_interface, migration_interface_address) to make
the use of a dedicated migration network possible.

Change-Id: I723c9bea9cf1881e02ba39d5318c090960c22c47

Change-Id: I7dbb5a33ef78dc4ecd338ffbd59a29c0fe3be9c5

Existing defaults are setup for tcp, and set ca_file to an empty string.
'If you set this to an empty string, then no trusted CA certificate is loaded.'

libvirt may complain 'unsupported configuration: No server certificate path
set to match server key', as such tls should also be explicitly set to 0.

Change-Id: I49c64808cb236dab1d9fa2e699d0a2f2fc54cc99

Thgis PS add missing check for Kubernetes orchestration engine,
without these changes, running kolla-ansible genconfig fails
for Kubernetes environment.

TrivialFix

Change-Id: I25eeb7ae3ddba7c924f6d48aa24afdbe74227170

Test results of this patch set are at:
http://paste.openstack.org/show/491382/

Change-Id: I1bc8bdb3180f30dc69af28a35fa057ac801bde0f
Closes-Bug: #1560298

We use tcp connection rather than socket so we can remove the config
options related to it.

Additionally adjust the _extremely_ verbose logging from INFO to
WARNING.

TrivialFix
Change-Id: I88bf660134192f11732d012985df5c4f688419ba

Add `nova` user to nova-libvirt container.
And change libvirt-socket group to nova.

Change-Id: I183c83f4be8b1d7c75d4ac204df7b7e059626aa2
Closes-Bug: #1525583

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