Actually add logs fixture sorting

[damemi]

#580 didn't work because I was just checking the request.LogName field, which our exporter doesn't set (we set individual entry log names ie, request.Entries[i].LogName). I also forgot to add the matching sort to the fixture generator.

The tests still passed due to the randomness of the fixture ordering (until post-merge https://github.com/GoogleCloudPlatform/opentelemetry-operations-go/actions/runs/4086503881). But, I should have caught this based on the fact that fixtures weren't updated in #580.

This sorts each entry in each request, then sorts the requests based on either their LogName or the LogName of the first entry in the request. This should be sufficiently deterministic for our tests.

[damemi]

failing even harder now, lol. looking into this

[codecov]

Codecov Report

Merging #581 (6c300a5) into main (11e5b93) will increase coverage by 0.29%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main     #581      +/-   ##
==========================================
+ Coverage   63.95%   64.25%   +0.29%     
==========================================
  Files          38       38              
  Lines        4334     4345      +11     
==========================================
+ Hits         2772     2792      +20     
+ Misses       1445     1435      -10     
- Partials      117      118       +1     

Impacted Files	Coverage Δ
...er/collector/integrationtest/testcases/testcase.go	82.50% <75.00%> (-0.37%)	⬇️
...lector/internal/datapointstorage/datapointcache.go	89.39% <0.00%> (+9.09%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[damemi]

comparing just by entry.LogName didn't always produce the same output either (for the record, these passed locally for me but failed in the CI environment)

I went all out and just compared the String() output of the protobuf message in each entry. that generated even more fixture changes, and it looks like it passed both locally and in CI now.