Solr 9.7 → 9.8 for integration tests

[thomascorthals]

The Solr 9.8 release broke some integration tests.

Things I had to chance to fix that:

• The extraction module is no longer loaded by default, fixed by adding the SOLR_MODULES=extraction environment variable.
• The patch file for solrconfig.xml is no longer compatible with previous versions, fixed by having a separate patch per version like we do for the schema.
• 1 of the 32 sample documents in techproducts was removed, re-added the minimally required fields for the integration tests rather than checking the version in every integration test to determine if we must expect 32 or 31 docs.
• For some reason the solr1 instance in the cloud test didn't start unless I added -z (--zk-host) to the command even though the other containers have no problem recognising ZK_HOST.

solr1  | Neither --zk-host or --solr-url parameters provided so assuming solr url is http://localhost:8983.
solr1  |
solr1  | ERROR: Server refused connection at: http://localhost:8983/solr/admin/info/system
solr1  |
solr1 exited with code 1

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.76%. Comparing base (9cdf3dd) to head (f3c4087).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1146      +/-   ##
==========================================
+ Coverage   97.75%   97.76%   +0.01%     
==========================================
  Files         400      400              
  Lines       10524    10573      +49     
==========================================
+ Hits        10288    10337      +49     
  Misses        236      236              

Flag	Coverage Δ
unittests	97.76% <ø> (+0.01%)	⬆️

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