Dashboard with Network and Platform NFVi metrics

Dashboard with Network and Platform NFVi metrics

Added the PROX L3FWD Grafana dashboard with NFVi metrics
collected from barometer collectd container.

The dashboard has template field for HOST/SUT name
to get the collectd metrics from that SUT.

JIRA: YARDSTICK-1412

Update:
- Added table and graphs for TG NFVi metrics
- Added TG and SUT templates as IP address
- Added IPC(instruction per cycles) metric

Change-Id: I1f8971f551df27ad6a16241693527285610fc82d
Signed-off-by: Abhijit Sinha <abhijit.sinha@intel.com>