[AKS] az aks create: add enable-encryption-at-host parameter

[andyzhangx]

Description

az aks create: add enable-encryption-at-host parameter

Testing Guide

docker run -v ${HOME}:/root -it andyzhangx/azure-cli:2.22.1
az aks create -g $RESOURCE_GROUP_NAME -n $CLUSTER_NAME --node-count 1 --node-vm-size Standard_DS2_v2 --generate-ssh-keys --kubernetes-version 1.20.2 --enable-encryption-at-host
az aks nodepool add --name nodepool2 --cluster-name $CLUSTER_NAME --resource-group $RESOURCE_GROUP_NAME --enable-encryption-at-host

History Notes

[Component Name 1] BREAKING CHANGE: az command a: Make some customer-facing breaking change.
[Component Name 2] az command b: Add some customer-facing feature.

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[andyzhangx]

I already added exception rules in linter_exclusions.yml, not sure why it still failed:

2021-04-22T03:48:24.7236220Z -  FAIL - HIGH severity: option_length_too_long
2021-04-22T03:48:24.7237497Z     Parameter: aks create, `enable_encryption_at_host` - The lengths of all options ['--enable-encryption-at-host'] are longer than threshold 22. Argument enable_encryption_at_host must have a short abbreviation.
2021-04-22T03:48:24.7238773Z     Parameter: aks nodepool add, `enable_encryption_at_host` - The lengths of all options ['--enable-encryption-at-host'] are longer than threshold 22. Argument enable_encryption_at_host must have a short abbreviation.

[andyzhangx]

@fengzhou-msft would you help review? thanks.

[andyzhangx]

@qwordy could you help review? thanks.

[andyzhangx]

@qwordy can you merge this PR? thanks.