Add Microsoft.ContainerService/managedClusters to subnet delegations

[xrow]

SUMMARY

I am in the need of adding Microsoft.ContainerService/managedClusters delegation for AKS. Tough I think it might be also ok to remove all the array from the definition and let the Server API check the correct type. Please let me know if I can remove all type checking of the client lib.

• Bugfix Pull Request

COMPONENT NAME

azure_rm_subnet.py

ADDITIONAL INFORMATION

- name: Create a subnet
  azure.azcollection.azure_rm_subnet:
    resource_group: global
    virtual_network_name: global
    name: "{{ cluster.name }}APISubnet"
    address_prefix_cidr: "{{ cluster.api_subnet }}"
    delegations:
    - serviceName: Microsoft.ContainerService/managedClusters
      name: ContainerService