Travis job should check git commit message for github bug id and an optional tendrl spec name

[anmolbabu]

In accordance with Tendrl/commons#66 all tendrl repos need a travis integration to check commit message for certain mandatory fields as described below:
"
Moving on, all git commits should contain mandatory mention on newline of
"tendrl-bug-id: <tendrl_repo>/" and optional mention of "tendrl-spec: <tendrl_spec_name>" in the commit msg.

eg:
"""
Packaging python-etcd

Added Makefile and spec file to create python-etcd package
Now one can use "make rpm" to pull the latest source from github
and build the source rpm
and using the Makefile one can also build rpm using "make rpm"
which will use mock to build the rpm using srpm.

tendrl-bug-id: Tendrl/commons#18

tendrl-spec: refactor_gluster_integration_get_state_dump
"