bump up the max_files to 32768 and max_processes to 131072.
when nova used ceph as backend, the default limit 1024 is not enough.
each connection from rbd image to osd needs 1 fd and 2 threads. if we
have 200 osds, we need 200 fds and 400 threads for 1 image.

Change-Id: I94c3ec111473ea2ccacdea5dbbf3fdc9c569859f

This fix libvirtError Unable to open logfile issue.
Related-Bug: #1668654
Change-Id: I36720af0c7d3dd7c69d2404843f54c0991aea1bb

This patch includes three unrelated fixes.

Make qemu use nova user in centos
Libvirt 3.2.0 (latest version in centos) seems to
have changed behavior of dynamic_ownership.

Pin ansible to <2.4 to make ara work in gates
ARA does not work yet with ansible 2.4, this change
pins to lower version to make gates work.
Revert once ara works with 2.4

Disable selinux for oraclelinux and centos.

Co-Authored-By: wanghongxu <wang19930902@gmail.com>
Co-Authored-By: Jeffrey Zhang <jeffrey.zhang@99cloud.net>
Change-Id: Iac8bec19437192cd198d58f71c6ed0a65a76f820
Closes-bug: #1718541

Libvirt 2.5 (latest version in cloud archive) seems to have changed
behavior of dynamic_ownership.

Change-Id: Icf9592c2f82f0f4a35074b9b13a51643a32631e9
Closes-bug: #1668654

Closes-Bug: #1572819

Change-Id: I1f2edb482af1e85708159a0dba44a79427dc5af3

CentOS has a virtualization sig and storage sig which produces
udpated ceph and qemu images.  These images are then reused within
the rest of Red Hat packaging.  Install these repositories for
CentOS and make use of them.

This should work for OracleLinux as well.
Still testing centos.

Co-Authored-By: Vikram Hosakote <vhosakot@cisco.com>
Co-Authored-By: Paul Bourke <paul.bourke@oracle.com>

Change-Id: Iea21fc4f33bbfdb973cf354d492c372bd3360acb
Closes-Bug: #1566588

Install Ansible code, etc file examples, scripts, an open
rc example, a tool to initialize the OpenStack deployment,
and other various useful bits.

Start the versioning at 0.1.0 as recommended by ttx.

Change-Id: I35fa4042040957e7725c7fc3b146009e0135499a
Partially-Implements: blueprint python-package

This adds a new test script for the new python based build script. A new
tox target has been created to execute it for usage in the gate.
Eventually, the other build script stuff can be deleted, but that won't
be done until full functionality exists in the new build.py.

Change-Id: Id9dd19926b1b9d875dcb069fd13d6450318374c8
Paritally-Implements: blueprint build-script

Add set_configs function that implements the flow from the proposed
ansible-multi spec. Move start.sh to config-internal.sh to preserve existing
behaviour.

config-externall.sh copies the appropriate configs in from the bind'd
location and sets permissions and ownership appropriately.

Partially Implements: blueprint ansible-multi

Change-Id: I53fca0660451087f273fefc3c63e0d8cf1a2c096