Add channels entries for image architecture

[hakman]

This should fix most requests around having correct images for new clusters and upgrades.

Fixes: #11023

/cc @rifelpet @olemarkus @bharath-123

[bharath-123]

Tried testing this out with the toolbox command, got this error

bharath12345@Bharaths-MacBook-Pro kops % kops toolbox instance-selector nodes --vcpus 4 --flexible --usage-class spot --cpu-architecture arm64 --cluster-autoscaler --dry-run
Using cluster from kubectl context: test-stuff.kops-cluster.com

I0314 18:48:18.623902   99607 populate_instancegroup_spec.go:260] Cannot set default Image for CloudProvider="aws"

unable to determine default image for InstanceGroup nodes

[rifelpet]

@bharath-123 your kops build is likely using the upstream master channels file which doesn't have the architecture additions in it. If you update your cluster spec's channel field to the file's URL from this PR then it should work.

https://raw.githubusercontent.com/kubernetes/kops/a5f5f984c99a9cf6b31ab87beee15a5248f50107/channels/stable

[bharath-123]

@bharath-123 your kops build is likely using the upstream master channels file which doesn't have the architecture additions in it. If you update your cluster spec's channel field to the file's URL from this PR then it should work.

https://raw.githubusercontent.com/kubernetes/kops/a5f5f984c99a9cf6b31ab87beee15a5248f50107/channels/stable

Got it @rifelpet Thanks for clearing that out!

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[yurrriq]

I'm running into issues using kOps 1.20.0: wrong type for value; expected architectures.Architecture; got string

using this snippets/common/ami:

{{ default (ChannelRecommendedImage $.cloud (include "kubernetesVersion" $) $.architecture) $.image }}

snippets/common/kubernetesVersion:

{{ default ChannelRecommendedKopsKubernetesVersion $.kubernetesVersion }}

with this template

{{ $image := include "ami" $) }}

and these values:

architecture: amd
cloud: aws

Edit: created #11217