Policy config is misplaced

[Maciej Szankin]

Patch 9864801d468de5dde79141cbab4374bd2310bef2 introduced config options that are registered outside nova/conf/ directory, thus violating check N342 (which does not work, it will be fixed in https://review.openstack.org/#/c/355597/ which cannot be introduced until the issue with policy configs is fixed).

Logs:
2016-09-14 08:33:33.496626 | ./nova/cmd/policy_check.py:39:1: N342 Config options should be in the central location '/nova/conf/*'. Do not declare new config options outside of that folder.
2016-09-14 08:33:33.496779 | ./nova/cmd/policy_check.py:148:1: N342 Config options should be in the central location '/nova/conf/*'. Do not declare new config options outside of that folder.

[Matt Riedemann (mriedem)]

I think this could be resolved by fixing bug 1619382 instead - the options in the policy_check command are CLI options which makes them a bit different. I'm not really sure what value is in using CLI options, but I'd expect to just handle those options like normal CLI options, i.e. argparse options.

[Matt Riedemann (mriedem)]

At a minimum we should loosen up the hacking check to allow CLI options to be defined outside of nova/conf/.