This patch removes separate state galera.ssl as it was previously
wrongly introduced. Instead include ssl tasks to master/slave when
ssl is enabled.
This fixes missing requirements when applying separate states.
Ensure that mysql package is installed before changing group
ownership for ssl files to mysql, as group will be added by mysql
packages.

Fix ssl inital configuration. SSL settings are not applied during
service reload, we have to add them during initial galera cluster
start.

Change-Id: Iff9a268000c3e5e722cc6e197cfd223ec1015f73
Related-Prod: PROD-16695

Change-Id: I07624681c53cef53de6c72de97a53b96ea52381b

Make max_connections and innodb_buffer_pool_size configurable
through soft params instead of hard.

Change-Id: Id0bb8f6b6091289275864bf4dd6a6890d11b4782

Change-Id: Id77cd6da330fe986844b3331edd514819471e67a

Change-Id: I88e3591eaa018406c48dd790ce946a9f783aa758

The buffer_pool_size parameter should be a integer value when followed
by a memory unit (eg '1024M', not '1024.1M'). Otherwise the MySQL
doesn't start properly.

Change-Id: I5dfad49a8e44a40ae87c5e8e0b033dcd73dc2837

Usage:

  galera:
    master:
      innodb_buffer_pool_size: 1024M
    slave:
      innodb_buffer_pool_size: 1024M

If innodb_buffer_pool_size is not set then 35% of the available
ram will be allocated for the buffer pool.

Change-Id: Iaffa3f5b4ded8bc838f9d707916e360ed873c13b

Change-Id: I34d6d8146489bab30e5ee621e3b8d01fe7ff819b

Because the current timeout interval is too short in some environments.
The change also adds information messages to bootstrap scripts

Change-Id: I295da792349f5864a484e3eb318342dcc31fffab

Galera master installation hangs on installation
mysql-server-wsrep-5.6. It seems that log_error is not working,
because of next message: "mysqld_safe Can't log to error log and
syslog at the same time. Remove all --log-error configuration
options for --syslog to take effect." Using "syslog = yes" instead
of log_error makes it works without any other changes.

Change-Id: I39a8a87ed048557c19f3843b97c75469385e4978
Closes-bug: PROD-9065

This patch enables support for Grafana and provides a new dashboard.

This also installs 2 additional packages (libdbd-mysql and
python-pymysql) that are required for running the collectd plugins.

Conflicts:
	galera/master.sls
	galera/slave.sls