Move already instrumented executable log messages to Debug level

[mariomac]

For default configs in helm charts, these messages flood the info logs for some periodic processes.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 81.77%. Comparing base (53e55b2) to head (90ea7b3). Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1227   +/-   ##
=======================================
  Coverage   81.77%   81.77%           
=======================================
  Files         137      137           
  Lines       11509    11509           
=======================================
  Hits         9411     9411           
  Misses       1559     1559           
  Partials      539      539           

Flag	Coverage Δ
integration-test	60.89% <100.00%> (+0.07%)	:arrow_up:
k8s-integration-test	58.40% <100.00%> (ø)
oats-test	36.14% <0.00%> (ø)
unittests	52.92% <0.00%> (+0.01%)	:arrow_up:

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