Improve AMS error experience

[ivan-degtiarenko]

Description

Broaden amount of error codes that return an extended error message + give customer alternative if going to /openshift URL does not work

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.
• Add secret to app-interface Vault or Secrets Manager if necessary
• RDS changes were e2e tested manually
• Check AWS limits are reasonable for changes provisioning new resources

Test manual

TODO: Add manual testing efforts

# 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

[stehessel]

As far as I know visiting https://console.redhat.com/openshift does not help when AMS returns 403. So I'd split this off from the 404 case and maybe condense the error message a bit.

[mtodor]

Nice! It would be good to apply the suggestion from @stehessel before merging.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ivan-degtiarenko, mtodor, stehessel

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