Feat(eos_cli_config_gen): Add support for BGP session tracking

[gmuloc]

Change Summary

Implement BGP session tracker

Related Issue(s)

Fixes #2653

Component(s) name

arista.avd.eos_cli_config_gen

Proposed changes

Added the following schema to router-bgp

bgp:
  neighbors:
    type: list
    primary_key: ip_address
    item:
      type: dict
      keys:
+       session_tracker:
+       type: str
  peer_groups:
    type: list
    primary_key: name
    item:
      type: dict
      keys:
+       session_tracker:
+       type: str
[...]
+      session_trackers:
+        type: list
+        primary_key: name
+        items:
+          type: dict
+          keys:
+            name:
+              type: str
+              description: Name of session tracker
+            recovery_delay:
+              type: int
+              description: Recovery delay in seconds
+              convert_types:
+                - str
+              min: 1
+              max: 3600

Added the following schema to ethernet interfaces and port-channel interfaces

        bgp:
          type: dict
          keys:
            session_tracker:
              type: str
              description: Name of session tracker

How to test

Added tests to molecule eos_cli_config_gen scenario

Checklist

Repository Checklist

• My code has been rebased from devel before I start
• I have read the CONTRIBUTING document.
• My change requires a change to the documentation and documentation have been updated accordingly.
• I have updated molecule CI testing accordingly. (check the box if not applicable)

[gmuloc]

@dgonzalez85 - please have a look and in particular documentation may not be complete. Let us know what makes sense!

[emilarista]

These commands look incorrectly indented to me, only 2 instead of 3 spaces. Both for the session tracker command and the recovery delay under it.

[gmuloc]

Good catch - addressed in 76c6075

[carlbuchmann]

LGTM