[ReleasePR netapp] [NetAppFiles] fix default in volumeproperties (#1848)

Create to sync Azure/azure-rest-api-specs#15691
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/netapp?expand=1)

Author: msftbot[bot]

schemas/2021-06-01/Microsoft.NetApp.json

@@ -1702,25 +1702,25 @@
           "oneOf": [
             {
               "type": "integer",
-              "default": "4"
+              "default": "0"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
             }
           ],
-          "description": "Default group quota for volume in KiBs.  Minimum 4 KiBs."
+          "description": "Default group quota for volume in KiBs. If isDefaultQuotaEnabled is set, the minimum value of 4 KiBs applies."
         },
         "defaultUserQuotaInKiBs": {
           "oneOf": [
             {
               "type": "integer",
-              "default": "4"
+              "default": "0"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
             }
           ],
-          "description": "Default user quota for volume in KiBs. Minimum 4 KiBs."
+          "description": "Default user quota for volume in KiBs. If isDefaultQuotaEnabled is set, the minimum value of 4 KiBs applies ."
         },
         "encryptionKeySource": {
           "type": "string",