Add instrumentation to MetadataCache
Add some more metrics, fix typo
Change name of a metric
Add locator to cache size
Make Type and unit processing configurable
Fix the name of metric registry
Catch exception with metric registration
Remove TAU thread pool configuration from this PR
Merge pull request #301 from chinmay-gupte/chinmay/add_instrumentation_to_metadata_cache

Add instrumentation to MetadataCache