Recently added post_config for Grafana does some uri queries,
these can be problematic if run across every node.

Change-Id: I580212474879da18780fc5f66a21952a9e6f8daa

Useful api_interface_address variable has been define here:
https://github.com/openstack/kolla-ansible/blob/master/ansible/group_vars/all.yml#L57
In order to simplify codebase we must use it as much as possible.

Change-Id: I18fec19bf69e05a22a4142a9cd1165eccd022455

wait_for module waits 300 seconds for the port started or stopped.  This
is meaningless and useless in precheck. This patch change timeout to 1
seconds.

Change-Id: I9b251ec4ba17ce446655917e8ef5e152ef947298
Closes-Bug: #1688152

In order to automate Grafana configuration, this fix automatically
set the InfluxDB datasource. This avoid doing a annoying manual
configuration after Kolla-ansible deployment.

Change-Id: I2b1a63fd371966192f1df0a82cee4711c6324710

Add a new subcommand 'check' to kolla-ansible, used to run the
smoke/sanity checks.

Add stub files to all services that don't currently have checks.

Change-Id: I9f661c5fc51fd5b9b266f23f6c524884613dee48
Partially-implements: blueprint sanity-check-container

Kolla use kolla_toolbox container to interact
with the database.
Grafana fails to deploy if mysql-python is not installed
in the host.

Change-Id: I033f1828ff027532de9be94aaf7dee6dbeab8fb6
Closes-Bug: #1661646

Change-Id: I672d6fea935cbe7416ebd0cfff5006fddb9cd534
Partially-implements: blueprint better-reconfigure

Change-Id: I00d2dcb0895548ba169ab85764cf546c2214cbf5

Change-Id: Ic2ad2b38d7e1c988f9dca9dc0d377cfee7b89504
Partially-implements: blueprint condition-pre-check

* Merge prechecks.yml and site.yml playbook
* Create empty precheck.yml into all roles.

Change-Id: I8a138558a26c0a2a66c5fd48ed37be657c99c1dd
Implements: blueprint condition-pre-check

do_reconfigure.yml is introduced to use serial directive. But we use
it in wrong. Now serial has moved to playbook file. So it is time to
remove the do_reconfigure.yml file

Closes-Bug: #1628152
Change-Id: I8d42d27e6bc302a0e575b0353956eaef9b2ca9fd

beacause upgrade is not required to re create the database

TrivialFix

Change-Id: Ia0a776ecef61f80450edce093ac631b092532fc7

Added ansible role to deploy grafana

Added host group for grafana deployment

Co-Authored-By: zhubingbing <zhubingbing10@gmail.com>

Change-Id: I3dec4e8586b6f65fa7de66a48506d1c79de2fe1e
Partially-Implements: Blueprint performance-monitoring