static void addUserPermission(Configuration conf, UserPermission userPerm, Table t)
    throws IOException {
    addUserPermission(conf, userPerm, t, false);
  }
Stores a new user permission grant in the access control lists table.
@param conf     the configuration
@param userPerm the details of the permission to be granted
@param t        acl table instance. It is closed upon method return.
@throws IOException in the case of an error accessing the metadata table
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/PermissionStorage.java