Fixed Flaky Test

Details

• In this PR, the flaky test in org.apache.iotdb.cluster.query.ClusterPlanExecutorTest#testGetAllStorageGroupNodes has been verified then fixed.

• Used Collections to sort allStorageGroupNodes and exceptedStorageGroupNodes (which is generated from IoTDB.metaManager.getAllStorageGroupNodes();).

• Applied MNodeComparator implements Comparator<IStorageGroupMNode> to pass Spotless plugin.

This PR has:

• been self-reviewed.
  • concurrent read
  • concurrent write
  • concurrent read and write
• added documentation for new or modified features or behaviors.
• added Javadocs for most classes and all non-trivial methods.
• added or updated version, license, or notice information
• added comments explaining the "why" and the intent of the code wherever would not be obvious
  for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold
  for code coverage.
• added integration tests.
• been tested in a test IoTDB cluster.

Key changed/added classes (or packages if there are too many classes) in this PR