Major Description
The MemoryLocksService has a variable named "locks" under the "locks" group in the instrumentation that reports how many locks are currently acquired. When using Oozie HA, we don't have this.
We shouldn't have it report the total number of locks acquired by all Oozie servers because that would require checking ZooKeeper every time we check this. However, reporting the number of locks acquired by this Oozie server should be inexpensive while still being helpful and similar to the non-HA behavior.