Fix metricsd to conform to the lastest server schema

The new server push enabled component/trait validation rules. This
allows us to use the new schema that does not require vendor commands,
parameters and state to start with underscore ("_").

Also fixed a few minor errors in schema definition.

Change-Id: I184dd8e4c69c05e0dd1b0dddb1f9a7b0aef78841
2 files changed