tests: disable TestP2PRelay on CI

[algorandskiy]

Summary

Attempts to debug failures of TestP2PRelay as well as hardening startup checks have not stabilized the test on CI.
After adding pubsub traces there were no single failure in 7 runs in a row, so disabling this test as further debugging starts looking as a waste of time.

Also enabled debug logging in TestVotersReloadFromDiskAfterOneStateProofCommitted since it fails time to time.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.83%. Comparing base (a9641a3) to head (6af46df).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6059      +/-   ##
==========================================
- Coverage   56.16%   55.83%   -0.33%     
==========================================
  Files         488      488              
  Lines       69432    69432              
==========================================
- Hits        38995    38770     -225     
- Misses      27792    27983     +191     
- Partials     2645     2679      +34     

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[gmalouf]

Do we have any other coverage for the cases being disabled?

[algorandskiy]

yes, there is TestP2PSubmitTX that checks pubsub as well. This test is more about config parameter enabling Relay method (NetAddress set). In this sense there is no other such tests.