Improve Patrole config options

- Renames "rbac_flag" to "enable_rbac"
- Creates "strict_policy_check" option
- Resolves bug where policy not in policy.json
  would pass RBAC test, leading to false test
  results

Change-Id: I76429e6cb0ed4cad154a07b7a873fd23209da674
Closes-Bug: #1673626
14 files changed