Add heat resource types rbac tests.

Implements RBAC tests for the following policy actions:
  - stacks:list_resource_types
  - stacks:generate_template
  - stacks:resource_schema

Co-Authored-By: Avishek Dutta <ad620p@att.com>
Co-Authored-By: Anthony Bellino <ab2434@att.com>
Co-Authored-By: Rick Bartra <rb560u@att.com>

Change-Id: If4f0ec3b5fe1ebb66c42652e8dee9dda8089bb42
Partially-Implements: blueprint initial-tests-orchestration
1 file changed