When SSL enabled, /etc/mysq directory is created by salt.minion
state with 700 permissions. It prohibits mysql from reading config
file as normal mode is 755. This patch ensures that mode for
/etc/mysql and /etc/mysql/ssl have correct rights.

Change-Id: Icc2a43e7a56c60d30a716f29f0a9ec28c6549429
Related-Prod: ROD-16782

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: Ib8850b9251ac5165c25ab08d23a01db4a02fbdae

We need to be sure that enabled param is defined and set to True
during a state applying.

Change-Id: I19cd4c834f254d76d6b521d983d05b227c048065

command called by service.dead state:
systemd-run --scope systemctl stop mysql.service

More common way is to shut down service using known credentials

Change-Id: I2abe7eeea850333139587347039b1de8a6ea486f

Change-Id: I6047d632a2bfeb6525ac60092436ccd5334671e4

Change-Id: I91f55d599f5291f34bfa81f55dafd6734606e1cc

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

Bug: After deployment of linux formulas and salt states
/etc/security/limits.conf are not applying, as result connections
to mysql failed with error (pymysql.err.OperationalError)
(1040, u'Too many connections')

Solution: create mysql.overide, where ulimit is set to 102400

Closed-bug: PROD-8427

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

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