feat(anta.tests): Adding the test case to verify BGP neighbor authentication

[MaheshGSLAB]

Description

Add the test case to verify the BGP neighbor authentication.

Run the testcase by adding catalog as below:

anta.tests.routing:
  bgp:
      - VerifyBGPAuthentication:
          bgp_neighbors:
            - neighbor: 172.30.11.1
              vrf: default
            - neighbor: 172.30.11.5
              vrf: default

1. Testcase pass when details are correct.

                                                        All tests results                                                         
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Device    ┃ Test Name               ┃ Test Status ┃ Message(s) ┃ Test description                               ┃ Test category ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ s1-spine1 │ VerifyBGPAuthentication │ success     │            │ Verifies if BGP neighbors are configured with  │ routing, bgp  │
│           │                         │             │            │ MD5 authentication and state as established in │               │
│           │                         │             │            │ the specified VRF.                             │               │
└───────────┴─────────────────────────┴─────────────┴────────────┴────────────────────────────────────────────────┴───────────────┘

2. Testcase fails when bgp neighbor not found.

                                                        All tests results                                                         
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Device    ┃ Test Name               ┃ Test Status ┃ Message(s)                   ┃ Test description             ┃ Test category ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ s1-spine1 │ VerifyBGPAuthentication │ failure     │ BGP neighbor 172.30.11.11 is │ Verifies if BGP neighbors    │ routing, bgp  │
│           │                         │             │ not configured for `default` │ are configured with MD5      │               │
│           │                         │             │ VRF.                         │ authentication and state as  │               │
│           │                         │             │                              │ established in the specified │               │
│           │                         │             │                              │ VRF.                         │               │
└───────────┴─────────────────────────┴─────────────┴──────────────────────────────┴──────────────────────────────┴───────────────┘

3. Testcase fails when MD5 authentication is not enabled and state is not establised

                                                        All tests results                                                         
┏━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Device    ┃ Test Name               ┃ Test Status ┃ Message(s)                   ┃ Test description             ┃ Test category ┃
┡━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ s1-spine1 │ VerifyBGPAuthentication │ failure     │ Following BGP neighbors are  │ Verifies if BGP neighbors    │ routing, bgp  │
│           │                         │             │ not established or MD5       │ are configured with MD5      │               │
│           │                         │             │ authentication not enabled:  │ authentication and state as  │               │
│           │                         │             │ {'bgp_neighbors':            │ established in the specified │               │
│           │                         │             │ {'default': {'172.30.11.11': │ VRF.                         │               │
│           │                         │             │ {'state': 'Idle',            │                              │               │
│           │                         │             │ 'md5_auth_enabled': False},  │                              │               │
│           │                         │             │ '172.30.11.51': {'state':    │                              │               │
│           │                         │             │ 'Idle', 'md5_auth_enabled':  │                              │               │
│           │                         │             │ False}}}}                    │                              │               │
└───────────┴─────────────────────────┴─────────────┴──────────────────────────────┴──────────────────────────────┴───────────────┘

Fixes #493

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have run pre-commit for code linting and typing (pre-commit run)
• I have made corresponding changes to the documentation
• 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 (tox -e testenv)

[github-actions]

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[github-actions]

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[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[carl-baillargeon]

LGTM after small adjustments in docstrings.

[github-actions]

Conflicts have been resolved. A maintainer will review the pull request shortly.

[titom73]

Looks good to me