Flaky Migrate e2e tests: try explicitly killing processes before setting up new cluster

[rohit-nayak-ps]

Description

There has been a lot of flakiness in the e2e VReplication Migrate tests. Each of the ones I checked had a process not starting because a previous one had not been stopped. This happened even for the first test in the CI workflow. So possibly this is happening from previous workflows in reused test VMs or there is a bug somewhere in our cluster management.

Trying explicitly pkilling the processes a test cluster creates to see if we can work around this.

Related Issue(s)

Checklist

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Deployment Notes

[vitess-bot]

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[rohit-nayak-ps]

Log lines are for checking if we have residual processes. If this works we can remove the log lines asap.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.53%. Comparing base (45192d2) to head (09901da).
Report is 22 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #17394   +/-   ##
=======================================
  Coverage   67.52%   67.53%           
=======================================
  Files        1581     1581           
  Lines      253948   253948           
=======================================
+ Hits       171480   171499   +19     
+ Misses      82468    82449   -19     

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[rohit-nayak-ps]

This approach is not working.