feat(mep): add commit log config to generic metrics storages

[onewland]

Created topics in #2928, now let's use 'em

[codecov-commenter]

Codecov Report

Merging #2931 (4b8bd49) into master (03d8b70) will decrease coverage by 0.35%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2931      +/-   ##
==========================================
- Coverage   92.92%   92.56%   -0.36%     
==========================================
  Files         635      635              
  Lines       29085    29085              
==========================================
- Hits        27026    26922     -104     
- Misses       2059     2163     +104     

Impacted Files	Coverage Δ
snuba/datasets/storages/generic_metrics.py	96.15% <ø> (ø)
...nsactions_onpremise_fix_orderby_and_partitionby.py	32.00% <0.00%> (-52.00%)	⬇️
...ts/0010_groupedmessages_onpremise_compatibility.py	51.11% <0.00%> (-48.89%)	⬇️
tests/migrations/test_runner_individual.py	52.74% <0.00%> (-40.66%)	⬇️
...ns/snuba_migrations/events/0014_backfill_errors.py	92.72% <0.00%> (-3.64%)	⬇️
snuba/migrations/table_engines.py	95.50% <0.00%> (-3.38%)	⬇️
snuba/clusters/cluster.py	95.65% <0.00%> (-0.73%)	⬇️

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