B-48281 Create Base MetricsService

- Created MetricService to be used to instrument Repose
- Removed old non-used MetricsRegisteryService
- Created unit tests for generating Meters & Counters
- Created metrics.cfg.xml format
B-48281 Create the Base Metrics Service

- Adding MetricsService to ContextAdapter
merging in updates.
B-48281 Create Base MetricsService

Initializing MetricsService.
Merge pull request #532 from usnavi/MetricsService

B-48281 Create Base Metrics Service