policy.json is malformed after deploying Overcloud with custom OctaviaApiPolicies parameter

Issue

• policy.json looks malformed after deploying Overcloud with custom *ApiPolicies parameter:

  {
      "context_is_admin": "role:admin or role:load-balancer_admin",
      <OMITTED>
  ,
  "os_load-balancer_api:loadbalancer:put_failover":"rule:admin_or_owner"}