Don't remove mysql data in case of RESTART_CLUSTER

Also remove not needed try-catch blocks for restoreGaleraCluster function.

Only run xtrabackup.client state on lastNodeTarget

Fixes: PROD-32476

Change-Id: I31557ab0af65435ef2d63e84e5bcd4c59d4f0424
(cherry-picked from commit 7ddaea7a79bcc918021e0fea95b51911e0aafd98)
1 file changed