private static void setLocator(VM l) {
    locator = l;
  }
Returns the nth VM, ensuring that it is configured with the given VM configuration. Optional
operation currently supported only in distributedTests.

@param configuration the desired configuration for the VM
@param whichVM the index the VM
@return the specified VM, configured with the specified configuration
@deprecated use {@link VM#getVM(VmConfiguration, int)}
geode-dunit/src/main/java/org/apache/geode/test/dunit/Host.java