Fix Homer role for remote deployment and add dual OOP test results

- Fix: Use slurp module instead of lookup('file') in Homer role
  - lookup('file') runs on controller, template is on remote host
  - Now uses slurp to read from remote, then b64decode
  - Fixes deployment failure in remote scenarios

- Add comprehensive dual OOP test results to TESTING_SUMMARY.md
  - Deployed OP1 (openop_3) and OP2 (openop_2) successfully
  - 46 total pods (23 per OOP), 100% success rate
  - All services accessible on both hosts
  - Verified kubeconfig fallback pattern works correctly
  - Zero failures, zero regressions

Test Results:
  - 350 Ansible tasks executed across both OOPs
  - All refactored roles work with include_role style
  - Multi-host deployment successful
  - Total test coverage: 86 pods across 3 hosts