Fix RefreshMysqlDumpVersion to set the correct version for mysqldump

Author: caffeinated92

cluster/cluster_version.go

@@ -120,7 +120,7 @@ func (cluster *Cluster) RefreshMysqlDumpVersion() error {
 }
 
 if hasChanged {
-err := cluster.SetDBClientVersion(v)
+err := cluster.SetMysqlDumpVersion(v)
 if err != nil {
 return err
 }