[FEATURE REQ] Support `withFreeTier`, `withStandardTier` and `withPremiumTier` for aks.

[XiaofeiCao]

issue: https://github.com/Azure/azure-sdk-for-java/issues/38836

1. withFreeTier, withStandardTier and withPremiumTier, both create and update

docs: https://learn.microsoft.com/en-us/azure/aks/free-standard-pricing-tiers

Note: For premium tier, there's a supportPlan property(or k8s-support-plan in CLI). For premium, it's AKSLongTermSupport , while for other tiers, it's KubernetesOfficial . If they are tied together, we can set the value for user in withXXTier implementation.

2. withVersion, both create and update

https://github.com/Azure/azure-sdk-for-java/blob/bcdd2d3eb121f03a5e0d4ae0ed32d0bc646f4b3d/sdk/resourcemanager/azure-resourcemanager-containerservice/src/main/java/com/azure/resourcemanager/containerservice/fluent/models/ManagedClusterInner.java#L237

[agateaux]

Regarding the kubernetes version, as mentioned in my question ticket, if I may: For the creation, the definition stage already supports the 'withVersion', to specify the Kubernetes version. That's just for the update, the update stage doesn't offer this feature.

Present here: https://github.com/Azure/azure-sdk-for-java/blob/bcdd2d3eb121f03a5e0d4ae0ed32d0bc646f4b3d/sdk/resourcemanager/azure-resourcemanager-containerservice/src/main/java/com/azure/resourcemanager/containerservice/models/KubernetesCluster.java#L178

Not here: https://github.com/Azure/azure-sdk-for-java/blob/bcdd2d3eb121f03a5e0d4ae0ed32d0bc646f4b3d/sdk/resourcemanager/azure-resourcemanager-containerservice/src/main/java/com/azure/resourcemanager/containerservice/models/KubernetesCluster.java#L602

[weidongxu-microsoft]

2.37.0 released