[ENHANCEMENT] Remove test-connection pods

[hisImminence]

⚠ see update

Describe the use case:

test-connection pods do not take into account the global.image.registry setting, see here, but hardcode the download of the busybox container from the default docker repository.

Describe the enhancement/feature:

Desired outcome and acceptance tests:

Busybox container pod should be downloaded from the registry set in global.image.registry and only default to docker IO.

Related Support cases

• SUPPORT-25976

[hisImminence]

ETA: latest June release

[hisImminence]

We will remove the pods instead as they are only needed for test purposes and we should only rely on the readiness probes moving forward! This was used to check the healthiness of the stack via a helm cmd.

[hisImminence]

PR merged: #3001