ROX-16099: new DBs will use a LTS aurora-postgresql version

[vladbologa]

Description

New DBs will be provisioned with aurora-sqlpostgres engine version 13.9, which is a LTS (long term support) version. To stay on the LTS version, the auto upgrade minor version feature is now turned off.

This does not change existing DBs. As part of ROX-16099, I will monitor the upgrade state on AWS and disable auto upgrade on all instances, when they are all on v13.9.

Checklist (Definition of Done)

- [ ] Unit and integration tests added

• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.

Test manual

Tested in a local cluster, by running:
INSTALL_OPERATOR=NO MANAGED_DB_ENABLED=TRUE ./dev/env/scripts/up.sh
./scripts/create-central.sh

And then waiting for a Central to start successfully.

To test locally, I had to make the DB publicly accessible. For this purpose, I added a new VPC, security group and DB subnet group in dev on AWS.

# To run tests locally run:
make db/teardown db/setup db/migrate
make ocm/setup OCM_OFFLINE_TOKEN=<ocm-offline-token> OCM_ENV=development
make verify lint binary test test/integration

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kovayur, vladbologa

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