1) Handling concurrency by way of a ConcurrentQueue and queue of queues
In the previous commit,
Add handling of concurrency by way of a ConcurrentQueue and queue of queues

In this commit,
Tested concurrency and made a few changes
1) Through config, Metrics Service could write both to DB and Catalog
2) Tested writing to Catalog in Azure using Development Storage. Also,
Test Console application can uses this