Overcome bug "ImportError: No module named 'resource'"
Overcome bug "ImportError: No module named 'resource'"

* module 'resource' load it only when it's needed
* Improving "function cherry_pick($commit)"
* cherry picking using "cherry_pick($commit)"
* removing oslo.log cap | version 1.12.1 was released
* updated one older nova cherry-pick ( refs/changes/20/213720/5 )
andreibacos/hyperv-networking-ci,cloudbase/hyperv-networking-ci,andreibacos/hyperv-networking-ci,cloudbase/hyperv-networking-ci,rbuzatu90/hyperv-networking-ci,rbuzatu90/hyperv-networking-ci