Pin karpenter support to 0.6.*

[aclevername]

Description

Closes #4827

sad path:

cat cluster.yaml
apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: cluster-with-karpenter
  region: us-west-2
  version: '1.21'
  tags:
    karpenter.sh/discovery: cluster-with-karpenter

iam:
  withOIDC: true

karpenter:
  version: '0.7.2'
  createServiceAccount: true # default is false

./eksctl create cluster -f cluster.yaml
Error: failed to validate karpenter config: failed to validate karpenter config: maximum supported version is 0.6  

happy path:

cat cluster.yaml
apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: cluster-with-karpenter
  region: us-west-2
  version: '1.21'
  tags:
    karpenter.sh/discovery: cluster-with-karpenter

iam:
  withOIDC: true

karpenter:
  version: '0.6.2'

./eksctl create cluster -f cluster.yaml
2022-03-04 16:52:36 [ℹ]  eksctl version 0.88.0-dev+d66dc7c3.2022-03-04T16:51:04Z
2022-03-04 16:52:36 [ℹ]  using region us-west-2
2022-03-04 16:52:37 [ℹ]  setting availability zones to [us-west-2b us-west-2d us-west-2c]
2022-03-04 16:52:37 [ℹ]  subnets for us-west-2b - public:192.168.0.0/19 private:192.168.96.0/19
2022-03-04 16:52:37 [ℹ]  subnets for us-west-2d - public:192.168.32.0/19 private:192.168.128.0/19
2022-03-04 16:52:37 [ℹ]  subnets for us-west-2c - public:192.168.64.0/19 private:192.168.160.0/19
2022-03-04 16:52:37 [ℹ]  nodegroup "managed-ng-1" will use "" [AmazonLinux2/1.21]
2022-03-04 16:52:37 [ℹ]  using Kubernetes version 1.21
...

[Skarlso]

:D

[Himangini]

Nicely done 👍🏻

• Can we add some docs around this as mentioned in the main ticket?
• Can we capitalise the first letter of the title so it looks nice in release notes?

[nikimanoledaki]

LGTM :)
edit: just saw what Gini said - I agree!

[aclevername]

• Can we capitalise the first letter of the title so it looks nice in release notes?

Feel free to edit PR titles, don't need to ask 😄