Add network wrapper method checks

The pep8 rules T110/T111 check the method names of service clients,
but the rules could not find violations on network clients because
these clients use some wrapper methods.
This patch adds some checks for covering network clients.

Partially implements blueprint consistent-service-method-names

Change-Id: I4aede28261626a27a3a857ba05c1a0fdcc3cac5b
3 files changed