Made changes to use default policies in our unit and functional tests
rather than referring it from glance/tests/etc/policy.yaml file. Existing
function 'set_policy_rules' can be used to test custom policy rules in
functional testing.
Improvements needed in followup patch:
1. Property protection related unit tests still reads the special policy
from the policy.yaml file, need to make provision to override it instead.
2. Need to remove 'set_policy' function which actually responsible for
above behavior.
Related to blueprint policy-refactor
Change-Id: I0de9b9f9a7de499574101e3366ced730b0cb5fd1
Abhishek Kekane
21257615e7