Increase failure details for network_basic_ops

Indicate place of failure since network_basic_ops is becoming more complicated

Change-Id: I3f513f34692e77230271d884bee53cc672b5ca40
Don't run extensions list if service isn't available

This commit adds a check to see if the service is available before
running the extension list verification.

Partially implements bp config-verification

Change-Id: I722440cf84a44d9c38536a3421972c1cb837969e
Merge "Increase failure details for network_basic_ops"
Merge "Don't run extensions list if service isn't available"