[ReleasePR databoxedge] Updated description for K8 and CloudEdgeManagementRole (#1836)

Create to sync Azure/azure-rest-api-specs#15526
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Author: msftbot[bot]

schemas/2021-02-01/Microsoft.DataBoxEdge.json

@@ -1137,7 +1137,7 @@
       "required": [
         "kind"
       ],
-      "description": "CloudEdgeManagementRole role, Currently It's in Private Preview"
+      "description": "The preview of Virtual Machine Cloud Management from the Azure supports deploying and managing VMs on your Azure Stack Edge device from Azure Portal. \r\nFor more information, refer to: https://docs.microsoft.com/en-us/azure/databox-online/azure-stack-edge-gpu-virtual-machine-overview\r\nBy using this feature, you agree to the preview legal terms. See the https://azure.microsoft.com/en-us/support/legal/preview-supplemental-terms/ for additional details."
     },
     "CloudEdgeManagementRoleProperties": {
       "type": "object",
@@ -2389,7 +2389,7 @@
       "required": [
         "kind"
       ],
-      "description": "Kubernetes role, Currently it's in Private Preview"
+      "description": "The limited preview of Kubernetes Cluster Management from the Azure supports:\r\n1. Using a simple turn-key option in Azure Portal, deploy a Kubernetes cluster on your Azure Stack Edge device. \r\n2. Configure Kubernetes cluster running on your device with Arc enabled Kubernetes with a click of a button in the Azure Portal. \r\n Azure Arc enables organizations to view, manage, and govern their on-premises Kubernetes clusters using the Azure Portal, command line tools, and APIs.\r\n3. Easily configure Persistent Volumes using SMB and NFS shares for storing container data. \r\n For more information, refer to the document here: https://databoxupdatepackages.blob.core.windows.net/documentation/Microsoft-Azure-Stack-Edge-K8-Cloud-Management-20210323.pdf \r\n Or Demo: https://databoxupdatepackages.blob.core.windows.net/documentation/Microsoft-Azure-Stack-Edge-K8S-Cloud-Management-20210323.mp4\r\n By using this feature, you agree to the preview legal terms. See the https://azure.microsoft.com/en-us/support/legal/preview-supplemental-terms/"
     },
     "KubernetesRoleCompute": {
       "type": "object",