PMM-11274 Added 'rdsadmin' database to ignored list

[tshcherban]

PMM-11274

Build: SUBMODULES-3015

• postgres_exporter#93

Ignore rdsadmin database to avoid errors spamming logs. Thats a requirement from postgres_exporter.

[codecov]

Codecov Report

Merging #1589 (19446f2) into main (990740d) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

❗ Current head 19446f2 differs from pull request most recent head 87d03d6. Consider uploading reports for the commit 87d03d6 to get more accurate results

@@            Coverage Diff             @@
##             main    #1589      +/-   ##
==========================================
- Coverage   43.43%   43.42%   -0.02%     
==========================================
  Files         372      371       -1     
  Lines       44073    44053      -20     
==========================================
- Hits        19145    19131      -14     
+ Misses      23175    23173       -2     
+ Partials     1753     1749       -4     

Flag	Coverage Δ
managed	45.04% <100.00%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
managed/services/agents/postgresql.go	62.19% <100.00%> (ø)
agent/runner/jobs/mongodb_backup_job.go	11.48% <0.00%> (-8.31%)	⬇️
managed/models/job_helpers.go	76.57% <0.00%> (-1.21%)	⬇️
managed/services/agents/jobs.go	0.00% <0.00%> (ø)
agent/runner/jobs/mongodb_restore_job.go	0.00% <0.00%> (ø)
agent/runner/jobs/pbm_job_logger.go
...aged/services/management/backup/backups_service.go	51.91% <0.00%> (+0.13%)	⬆️
...ged/services/management/dbaas/kubernetes_server.go	58.81% <0.00%> (+0.59%)	⬆️
managed/models/kubernetes_helpers.go	70.51% <0.00%> (+3.84%)	⬆️

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