public GrantorRequestProcessor.GrantorRequestContext getGrantorRequestContext() {
    return grc;
  }
If the experimental multiple-system feature is enabled, always create a new system.

<p>
Otherwise, create a new InternalDistributedSystem with the given properties, or connect to an
existing one with the same properties.
geode-core/src/main/java/org/apache/geode/distributed/internal/InternalDistributedSystem.java