{AzureSQLVM} fixes #22768 Fix the enums under AgReplica (#22799)

* {AzureSQLVM} fixes #22768 Fix the enums under AgReplica

fixes #22768 

The casing seems not correct in Swagger compared to Service.

e.g.: After setting SYNCHRONOUS_COMMIT as swagger said, the value returned by Get response is Synchronous_Commit
Similar issue happens for other properties in AgReplica

* Update sqlvm.json

* Update sqlvm.json

Author: navba-MSFT

specification/sqlvirtualmachine/resource-manager/Microsoft.SqlVirtualMachine/stable/2022-02-01/sqlvm.json

@@ -1123,8 +1123,8 @@
         "role": {
           "description": "Replica Role in availability group.",
           "enum": [
-            "PRIMARY",
-            "SECONDARY"
+            "Primary",
+            "Secondary"
           ],
           "type": "string",
           "x-ms-enum": {
@@ -1135,8 +1135,8 @@
         "commit": {
           "description": "Replica commit mode in availability group.",
           "enum": [
-            "SYNCHRONOUS_COMMIT",
-            "ASYNCHRONOUS_COMMIT"
+            "Synchronous_Commit",
+            "Asynchronous_Commit"
           ],
           "type": "string",
           "x-ms-enum": {
@@ -1147,8 +1147,8 @@
         "failover": {
           "description": "Replica failover mode in availability group.",
           "enum": [
-            "AUTOMATIC",
-            "MANUAL"
+            "Automatic",
+            "Manual"
           ],
           "type": "string",
           "x-ms-enum": {
@@ -1159,9 +1159,9 @@
         "readableSecondary": {
           "description": "Replica readable secondary mode in availability group.",
           "enum": [
-            "NO",
-            "ALL",
-            "READ_ONLY"
+            "No",
+            "All",
+            "Read_Only"
           ],
           "type": "string",
           "x-ms-enum": {