(eks): Kubernetes 1.19 support

[pahud]

Allow user to select Kubernetes version 1.19

https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html#kubernetes-1.19

Use Case

Proposed Solution

Other

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

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This is a 🚀 Feature Request

[neilkuan]

so fast 👍

[github-actions]

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