mysql restore touch .galera_bootstrap

PROD-20768

Change-Id: Idab15151b3654efa8e64229d600fe12bad3e5ae9
diff --git a/xtrabackup-restore-mysql-db.groovy b/xtrabackup-restore-mysql-db.groovy
index 60b8caf..da3d463 100644
--- a/xtrabackup-restore-mysql-db.groovy
+++ b/xtrabackup-restore-mysql-db.groovy
@@ -81,6 +81,12 @@
             }
             sleep(5)
             salt.cmdRun(pepperEnv, 'I@galera:master', "su root -c 'salt-call mysql.status | grep -A1 wsrep_cluster_size'")
+
+            try {
+                salt.runSaltProcessStep(pepperEnv, 'I@galera:master or I@galera:slave', 'file.touch', ["/var/lib/mysql/.galera_bootstrap"], null, true)
+            } catch (Exception er) {
+                common.warningMsg('File is already present')
+            }
         }
     }
 }