Adding following role which is reuqired by octavia services

- load-balancer_observer
- load-balancer_global_observer
- load-balancer_member
- load-balancer_admin
- load-balancer_quota_admin

Change-Id: I6f351c96915b09cb9a6ef716515b45785d62cb90
Closes-Bug: #1745915

- Sahara
- Searchlight
- Senlin
- Tacker

This will copy only yaml or json policy file if they exist.

Change-Id: I97c8bf300f14ae6d7c55c5f8962c5781cee2c40a
Implements: blueprint support-custom-policy-yaml
Co-authored-By: Duong Ha-Quang <duonghq@vn.fujitsu.com>

This commit contains two fixes:
1. ``of_listen_address``: We use the xenapi's facts directly, so
that we can avoid depending on facts gathered by setup for hosts;
This is useful when deploy on the role of neutron only (--tag neutron);
2. ``local_ip``: Get the proper IP for tunnel. It should be chosen
from dom0's IP which is in the same network where tunnel interface
is connected.

blueprint: xenserver-support

Change-Id: I61bbd6499323e3fddd6293a0df6baec34dbddf23

When enabled provider networks; the neutron-openvswith-agent-xenapi
should use proper bridge_mappings which should have dom0's bridges
where the VMs' vifs actually connected to for the interfaces defined
in the configure option of *neutron_external_interface*.

Depends-On: I9a6bebe19ed488bb2173d5dc2daa14e236411243
Change-Id: I44f59c69d25b8400e1b936fcdf8f21b5c4168f1f

Neutron and Nova methods are included.

Addressed comments

Change-Id: Ic3d30bc76a298185fe978a470c64e805dd19a162

Agent is required for Neutron SRIOV post Mitaka
Closes-Bug: #1655921

Addressed comments
Added release notes

Change-Id: Ib8181c4da65fccd0c5f8487217060e5682977665
Signed-off-by: Christopher Nipper <christopher.r.nipper@intel.com>

If the wrong status code is returned, ansible sets failed: true.
This means that a retry is never attempted.

Use .get('status') to work around the possibility that a status
may not be returned in some corner cases. For example:

TASK [grafana : Wait for grafana application ready]
***************** fatal: [some_remote_node]: FAILED! =>
{"failed": true, "msg": "The conditional check 'result.status
== 200' failed. The error was: error while evaluating
conditional (result.status == 200): 'dict object' has no
attribute 'status'"}

Change-Id: I14207d1a9e994fa25c1c061025fff5b64a71d690
Closes-Bug: #1742501

Change-Id: I43db3048f92207da5ec3a2b9ed52b4c4083c3881
Closes-Bug: #1745128

- Ceph images are not being built when using depends-on a kolla build
  job.
- Sync inventory files with current ones which causes ceph to fail due
  missing groups.
- Small corrections in ceph config.yml syntax.
- fix preparse the disk only once
- enable ceph nfs only when enable_ceph_nfs is true

Co-Authored-By: Jeffrey Zhang <zhang.lei.fly@gmail.com>
Change-Id: Id0c7963bf59e2af4944834dcd16589a638e78ba5

otherwise, if the jinja2 blocks at the end of the line, it will remove
the last newline character and join two lines into one.

Change-Id: Ie710342fb034e477ff854eba3915dd845bddd257

This change allows the following use cases:

1. Using an already-configured MariaDB / MySQL server / Cluster
2. Using already-created DB users, without requiring root DB access.

Update: added external mariadb precheck

Change-Id: I78b0d178306d7c5293b0bf53e445f19f18b4b824
Implements: blueprint external-mariadb-support.
Closes-Bug: #1603121

Use the same router will result in conflict in the CI environment.

Change-Id: Id1ba69ebbf67b4cead855adbe440343c05ea3d1e
Closes-Bug: #1744913

Haproxy keeps restarting due memcached servers
are writen in a single line. adds a empty line
in the for so each server is in its line

Change-Id: I763a23de7f70e9ebe543b935b175e675ec774f9a

Change-Id: Icc4a984e8defe4d068e7f4a78cd5483a0cb9c7b7

Fixed misspelling in both comments and code function names 

Change-Id: Iaed5f246a9b02fd64433671fd0c0ee41b40bd222

Merge commit from[1][2]
[1]https://review.openstack.org/#/c/536657/
[2]https://review.openstack.org/#/c/536657/
Change-Id: I79bd4ca2457222abcc6a58cd3b44be21a11b5a87