[release-21.0] Topo: Add NamedLock test for zk2 and consul and get them passing (#18407)

[vitess-bot]

Description

This is a backport of #18407

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.51%. Comparing base (6d83fdc) to head (d567611).
⚠️ Report is 42 commits behind head on release-21.0.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-21.0   #18409      +/-   ##
================================================
- Coverage         67.51%   67.51%   -0.01%     
================================================
  Files              1572     1572              
  Lines            252311   252301      -10     
================================================
- Hits             170356   170341      -15     
- Misses            81955    81960       +5     

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[harshit-gangal]

@mattlord The test are failing as the code is different in v21. I think this would need code/test changes to pass.

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[github-actions]

This PR is being marked as stale because it has been open for 30 days with no activity. To rectify, you may do any of the following:

• Push additional commits to the associated branch.
• Remove the stale label.
• Add a comment indicating why it is not stale.

If no action is taken within 7 days, this PR will be closed.

[github-actions]

This PR was closed because it has been stale for 7 days with no activity.