d1c775f996
As per the community goal of migrating the policy file the format from JSON to YAML[1], we need to replace policy.json to policy.yaml and remove deprecated policy.json. config_template has been choosen instead of the copy, since it can properly handle content that has been lookuped. We make a separate task not to restart service when it's not needed. [1] https://governance.openstack.org/tc/goals/selected/wallaby/migrate-policy-format-from-json-to-yaml.html Change-Id: Ib47a387f15e358e15104fd1cf37e53e61c92ce61