Emilien Macchi 6562ab43b5 Refactorise Keystone resources management
Refactorise the code of Keystone resources management with backward
compatibility since we don't modify the unit tests.

Change-Id: I745bca89bfa588df9dbeddc875f0be49975f638f
Implements: blueprint common-openstack-identity-resource
2014-11-21 11:10:18 -05:00
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