Take back upstream checks for commit message
Take back upstream checks for commit message

Hacking checks for commit message was removed from upstream after
discussion [1]. We want to save it in Sahara, so we copy it from
hacking.
[1]: http://lists.openstack.org/pipermail/openstack-dev/2014-December/052519.html

Closes-Bug: 1429090

Change-Id: Ibec7fb27dbfb330e8749a798cf89c544d5198c40

esikachev/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,esikachev/sahara-tests,openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-scenario,esikachev/sahara-tests