Rename Metering to Telemetry in common guide.

backport: havana

Renamed section_getstart_metering.xml to section_getstart_telemetry.xml

Change-Id: I583524b7e5cbea48579482cca02753166c186622
Update local-files for training-guides change

Change-Id: Icad368343c0eff12fa8209ee2126561d1f3a1004
Merge "Rename Metering to Telemetry in common guide."
Merge "Update local-files for training-guides change"