fix(P_network_delete): Implement retry logic for VM network deletion

[ovalenti]

Description

There are quite a few occurrences of CI failures where the integration tests pass, but the P VM fails at the network teardown phase. Adding retry ansible logic.

Checklist

• Investigated and inspected CI test results
• Updated documentation accordingly

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 27.38%. Comparing base (03593d5) to head (1ea4520).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2772   +/-   ##
=======================================
  Coverage   27.38%   27.38%           
=======================================
  Files          95       95           
  Lines        5427     5427           
  Branches     2548     2548           
=======================================
  Hits         1486     1486           
  Misses       3214     3214           
  Partials      727      727           

Flag	Coverage Δ
collector-unit-tests	27.38% <ø> (ø)

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