Add $::galera_bootstrapped fact
Add $::galera_bootstrapped fact

This fact let puppet know if the node is part of a Galera cluster
already or not.

Change-Id: I4ff0512a0d15ac4797c8c64ed76c0fd3fc31b45c

egafford/puppet-tripleo,paramite/puppet-tripleo,openstack/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,egafford/puppet-tripleo,paramite/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,egafford/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo,paramite/puppet-tripleo,rdo-puppet-modules/puppet-tripleo