Imports oslo policy to fix test issues

Tests inheriting from keystone.tests.TestCase depend on having the
policy_file command-line option declared before setUp runs. Importing
the oslo policy module automatically declares the option.

Fixes-Bug: 1233224
Change-Id: I939bbdcb7df1c4a59108dced92d4d5c2e96defe2
Open Icehouse development

This should be accepted/merged once all the RC1 bugfixes are in.

This bumps the target version to 2014.1, effectively opening the master
branch to Icehouse development, ending the feature freeze.

The Havana release branch is cut from the previous commit in master.

Change-Id: I99861235bb71d9b47ff85623317efe4243ee0668
Merge "Imports oslo policy to fix test issues"
Merge "Open Icehouse development"