test(cat-gateway): Integration test for RBAC endpoint

[bkioshn]

Description

Add integration test for RBAC GET endpoint

Related Issue(s)

Closes #2384

Description of Changes

• Testing lookup with stake address and cat id for GET endpoint
• Refactor the rbac utility
• Fixing catid description and regex
• Fix test data

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 723/727}$ | ${\color{red}Fail: 0/727}$ |

[stevenj]

LGTM

[Mr-Leshiy]

LGTM