ROX-33865: Scanner V4 retry initial DB connection

[rhacs-bot]

Backport 0f13ca6 from #19761.

@dcaravel - this is to address the breakage in compatibility tests (gke-nongroovy-compatibility-tests and gke-version-compatibility-tests) that started occurring after enabling Scanner V4 in CI - these tests will continue to fail on commits merged to master (and nightlies) until this is merged and subsequent tag 4.9.x created. Indexer/matcher will restart when Scanner V4 DB does not accept the initial connection, and this triggers CI failure because the 'restart' pattern is not accepted.

Until that next tag is created, also adding a pattern to scripts/ci/logcheck/restart-ok-patterns.json in master to sto pthe failures until the next tag is ready, at which point will remove the pattern.

[rhacs-bot]

Images are ready for the commit at 1cff382.

To use with deploy scripts, first export MAIN_IMAGE_TAG=4.9.10-rc.0-4-g1cff382f86.

[openshift-ci]

@rhacs-bot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/ocp-4-21-scanner-v4-install-tests	1cff382	link	false	/test ocp-4-21-scanner-v4-install-tests

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[dcaravel]

/retest

[codecov]

Codecov Report

❌ Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.89%. Comparing base (1b4e147) to head (1cff382).

Files with missing lines	Patch %	Lines
scanner/datastore/postgres/connect.go	0.00%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           release-4.9   #21856   +/-   ##
============================================
  Coverage        48.89%   48.89%           
============================================
  Files             2719     2719           
  Lines           202983   202989    +6     
============================================
+ Hits             99252    99255    +3     
- Misses           95966    95969    +3     
  Partials          7765     7765           

Flag	Coverage Δ
go-unit-tests	48.89% <0.00%> (+<0.01%)	⬆️

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