k8sSearch duplicate scopes override rather than replace each other

[nightkr]

Affected version

23.7

Current and expected behavior

When declaring a secret volume with the scope service=foo,service=bar, secret-op will currently search for a secret with the label secrets.stackable.tech/service=bar, forgetting about service=foo entirely.

Secret-op should endeavour find a secret with both scopes.

Possible solution

Secret-op could query for a comma-separated list of services, such as secrets.stackable.tech/service=foo,bar.

Additional context

No response

Environment

No response

Would you like to work on fixing this bug?

None

[nightkr]

Comma-separation doesn't really work, both because of the 63-character label limit, and because we don't have a good separator (assuming that we leave . for #307).

Another alternative would be to split it into secrets.stackable.tech/service.0=foo&secrets.stackable.tech/service.1=bar.