private static RuntimeException serverNotFound(final String hostname) {
    return new RuntimeException(
      String.format("Did not find %s amongst the servers known to the client.", hostname));
  }
Overrides commands to make use of coprocessor where possible. Only supports actions taken against
Master and Region Server hosts.
hbase-it/src/test/java/org/apache/hadoop/hbase/CoprocClusterManager.java