overrides: Allow nullable replicas (PROJQUAY-6474)

[jonathankingfc]

• Allow user to set overrides for replicas to null in order to completely remove default value
• This prevents conflicts with HPA in the event that a user wants to use an unmanaged HPA

[jonathankingfc]

/cherrypick redhat-3.9

[jonathankingfc]

/cherrypick redhat-3.10

[openshift-cherrypick-robot]

@jonathankingfc: #896 failed to apply on top of branch "redhat-3.9":

Applying: overrides: Allow nullable replicas (PROJQUAY-6474)
Using index info to reconstruct a base tree...
M	apis/quay/v1/quayregistry_types.go
M	bundle/manifests/quayregistries.crd.yaml
M	config/crd/bases/quay.redhat.com_quayregistries.yaml
Falling back to patching base and 3-way merge...
Auto-merging config/crd/bases/quay.redhat.com_quayregistries.yaml
Auto-merging bundle/manifests/quayregistries.crd.yaml
Auto-merging apis/quay/v1/quayregistry_types.go
CONFLICT (content): Merge conflict in apis/quay/v1/quayregistry_types.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 overrides: Allow nullable replicas (PROJQUAY-6474)
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherrypick redhat-3.9

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[openshift-cherrypick-robot]

@jonathankingfc: #896 failed to apply on top of branch "redhat-3.10":

Applying: overrides: Allow nullable replicas (PROJQUAY-6474)
Using index info to reconstruct a base tree...
M	apis/quay/v1/quayregistry_types.go
M	bundle/manifests/quayregistries.crd.yaml
M	config/crd/bases/quay.redhat.com_quayregistries.yaml
Falling back to patching base and 3-way merge...
Auto-merging config/crd/bases/quay.redhat.com_quayregistries.yaml
Auto-merging bundle/manifests/quayregistries.crd.yaml
Auto-merging apis/quay/v1/quayregistry_types.go
CONFLICT (content): Merge conflict in apis/quay/v1/quayregistry_types.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 overrides: Allow nullable replicas (PROJQUAY-6474)
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherrypick redhat-3.10

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jonathankingfc]

Manual cherry picks

3.9 -> #909
3.10 -> #910

[gizzi-rh]

I do not see the issue fix with Quay 3.11