Spec Lite: Policy tests refactoring

Change-Id: I37c9663b79acf44a868f34671db3e820d702b2e7

specs/xena/approved/glance/policy-tests-refactoring.rst

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+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+===================================
+Spec Lite: Policy tests refactroing
+===================================
+
+:project: Glance
+
+:problem: At the moment our unit and functional tests are referring to
+          policy.yaml located in `glance/tests/etc` of the project
+          repository. As now we are putting efforts into refactoring the
+          policy layer in glance we should be testing our defaults
+          except where we want to test something specifically different.
+
+:solution: Instead of using policies from policy.yaml file we should be
+           testing our defaults except where we want to test something
+           specifically different.
+
+:impacts: None
+
+:alternatives: None
+
+:timeline: Xena Milestone-2
+
+:reviewers: Steap, rosmaita, pdeore
+
+:assignee: abhishek-kekane, dansmith