fix(sdm-relay): switch kubectl images (again)

[jaredallard-laurel]

Description of changes

Unfortunately, the way we deployed helm charts made it seem like the other image was working, but it was not. I didn't notice the bash call, and that Kubernetes image is kubectl only, no shell.

There isn't a great replacement with a shell, aside from this opensuse image, so I opted for that, but totally open to suggestions (e.g., rancher/kubectl).

I triple checked this one works this time :)

Validation steps

• installed the pre-commit hooks with pre-commit install
• (optionally) deployed this change to k8s cluster.

[jaredallard-laurel]

Ping on this @kellenanker7 (sorry!)

[kellenanker7]

interestingly, it seems like some k8s versions don't have associated images. for example:

~: docker pull registry.suse.com/suse/kubectl:1.35
1.35: Pulling from suse/kubectl
Digest: sha256:164d73450e981f6996c196472dd1191367b12c3eb0f45780a5cc444652af9130
Status: Downloaded newer image for registry.suse.com/suse/kubectl:1.35
registry.suse.com/suse/kubectl:1.35

~: docker pull registry.suse.com/suse/kubectl:1.33
1.33: Pulling from suse/kubectl
7a6c20d59360: Pull complete
Digest: sha256:3262d05e247c1df9ffb663b17608167a445cbfc20117b67abe8c152d013611d2
Status: Downloaded newer image for registry.suse.com/suse/kubectl:1.33
registry.suse.com/suse/kubectl:1.33

and yet:

~: docker pull registry.suse.com/suse/kubectl:1.34
Error response from daemon: failed to resolve reference "registry.suse.com/suse/kubectl:1.34": registry.suse.com/suse/kubectl:1.34: not found

not entirely sure what's wrong with 1.34, but we likely can't move forward with this new image if an entire minor version is not supported.

any other images you may have in mind? a public ECR one, for example?

[kellenanker7]

@jaredallard-laurel apologies for the late replies!