[AutoPR sdk/containerservice/mgmt-v2019_11_01] Use POST operation for node image version#3557

openapi-sdkautomation[bot] wants to merge 2 commits intosdkAutomation/sdk_containerservice_mgmt-v2019_11_01AzureSDKAutomation/azure-sdk-for-java:sdkAutomation/sdk_containerservice_mgmt-v2019_11_01from

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