Fix mysql with adding ulimit -n 102400

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

Change cluster policy to availability_of_members

Because the cluster isn't managed by Pacemaker, using
majority_of_members is misleading.

Stacklight

Put Grafana dashboards into their own directory

Merge master into stacklight

Add alarms and alarm clusters

Add missing JSON format for dashboard

Fix the name of the Grafana dashboard

Add support for log_collector

Add support for Grafana

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

Orchestration metadata and states

Add collectd support

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

MOS packages fix

galera configmap support

new major release compatible with Mirantis galera

Orchestration files

See merge request !2

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

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