Adds support to seperate Swift access and replication traffic from other storage traffic.

In a deployment where both Ceph and Swift have been deployed,
this changes adds functionalality to support optional seperation
of storage network traffic. This adds two new network interfaces
'swift_storage_interface' and 'swift_replication_interface' which maintain
backwards compatibility.

The Swift access network interface is configured via 'swift_storage_interface',
which defaults to 'storage_interface'. The Swift replication network
interface is configured via 'swift_replication_interface', which
defaults to 'swift_storage_interface'.

If a separate replication network is used, Kolla Ansible now deploys separate
replication servers for the accounts, containers and objects, that listen on
this network. In this case, these services handle only replication traffic, and
the original account-, container- and object- servers only handle storage
user requests.

Change-Id: Ib39e081574e030126f2d08f51de89641ddb0d42e

As py35 has been dropped and py36, py37 jobs are running, so
updated the setup.cfg accordingly.

Change-Id: I09eae818f3d4188444aba8f1ece9d3d11eda95c2

Update wsgi configuration after services migrating to python3.

Change-Id: I25d8db36dabd5f148b2ec96a30381c6a86fa710e
Depends-On: https://review.openstack.org/#/c/625298/
Partially Implements: blueprint python3-support

Commit 2f6b1c68 changed the way the
cephfs source path was generated and dropped the source path component,
keeping only the list of IPs and ports. This results in failures to
mount cephfs with the following message:

    source mount path was not specified
    failed to resolve source

Change-Id: I94d18ec064971870264ae8d0b279564f2172e548
Closes-Bug: #1819502

This patch implements the support for the elasticsearch-exporter in
kolla-ansible

The configuration and prechecks are reused from the other exporters

Depends-On: Id138f12e10102a6dd2cd8d84f2cc47aa29af3972
Change-Id: Iae0eac0179089f159804490bf71f1cf2c38dde54

With newer Docker versions `systemctl show docker` returns:

  MountFlags=shared

Instead of:

  MountFlags=1048576

This fix accepts either value as valid to ensure the check is not
erroneously failing.

Closes-Bug: #1791365

Change-Id: I2bd626466d6a0e189e0d85877b2be8f2b4bb37f4

It is possible to reference undefined variable in kolla-docker module if
DockerWorker object initialization fail, so the current behaviour will
crash the playbook with the unwanted error message :

UnboundLocalError: local variable 'dw' referenced before assignment

Change-Id: Ic8d26b11f93255220888b5406f8ab4a6f81736c2
Closes-Bug: #1819361

Kibana deployment failed becaused of kibana_confs variable does not have attribute key,
So handlers failed to check conditional kibana_conf.changed | bool becaused of
kibana_confs.results|selectattr(item.key) does not exits.

Change variable name kibana_confs to kibana_conf.

Change-Id: If5e0a25b270a6f05c435a6dc32e2ac49406389c5
Closes-Bug: #1819246

Recently as part of adding support for Docker CE we added the following
task to the baremetal role:

- name: Update yum cache
  yum:
    update_cache: yes
  become: True
  when: ansible_os_family == 'RedHat'

This works fine on Ansible 2.5, but no longer works on Ansible
2.6, which complains that either the 'name' or 'list' argument
is mandatory for the yum module.

This change updates the cache later on, when installing packages.

Change-Id: I1a158bda52c4e362cb12d361d7f961cfc699b385
Closes-Bug: #1819173

The message field for these format files wasn't renamed when
the input field was renamed. This problem was masked by Monasca
which renames the message field back to 'message' for the Fluentd
Monasca output plugin.

Change-Id: I2674958b1e64efddbca4765fefa55431261648e6
Closes-Bug: #1819168

In some scenarios it may be useful to perform custom formatting of logs
before forwarding them. For example, the JSON formatter plugin can be
used to convert an event to JSON.

Change-Id: I3dd9240c5910a9477456283b392edc9566882dcd

Currently permissions are set to be root, but tempest runs as 'tempest'
user - and gets permission denied.

Change-Id: Ia3a8a2e780f95c6aa16a9d2483d987322741cfbf

These files are copied by the wildcard which proceeds it.

Change-Id: I27dc7797db705f025c3a312cb9e9c577342ea06f

When using custom storage backends with cinder.conf overrides file,
precheck stage in kolla-ansible is fail. This commit adds option
'skip_cinder_backend_check' (default: False) to cinder role.

Change-Id: Ifee138ad8b281903ea2365441aada044c80c46f0

This adds a horizon_listen_port option, which defaults to horizon_port
for backward compatibility.

This option allow the user to differentiate between the port the
service listens on, and the port the service is reachable on. This is
useful for external load balancers which live on the same host as the
service itself.

Change-Id: I1e47e9524fd9c41bbb2cd2fc80560e53d9296599
Implements: blueprint service-hostnames

This allows gnocchi service endpoints to use custom hostnames, and adds the
following variables:

* gnocchi_internal_fqdn
* gnocchi_external_fqdn

These default to the old values of kolla_internal_fqdn or
kolla_external_fqdn.

This also adds a gnocchi_api_listen_port option, which defaults to
gnocchi_api_port for backward compatibility.

This option allow the user to differentiate between the port the
service listens on, and the port the service is reachable on. This is
useful for external load balancers which live on the same host as the
service itself.

Change-Id: Ic9a0f8130b19ed77987f45fd0e824b82ea7a7328
Implements: blueprint service-hostnames