@Parameterized.Parameters
  public static Collection parameters() {
    return Arrays
      .asList(new Object[][] { { MasterRegistry.class, 1 }, { ZKConnectionRegistry.class, 1 } });
  }
Test all client operations with a coprocessor that just implements the default flush/compact/scan
policy.
<p>
Base class was split into three so this class got split into three.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSideWithCoprocessor4.java