telemetry has support for fetching port based stats
from metrics library.
Metrics library also has global stats which are
not fetched by telemetry, so extend telemetry to
fetch the global metrics.
Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
Acked-by: Kevin Laatz <kevin.laatz@intel.com>
4080e46c80