[Hub Generated] Review request for Microsoft.DevTestLab to add version stable/2018-09-15 (#14294)

* Microsoft.DevTestLab S360 OpenApi Spec Corrections v2018-09-15

* Update isAuthenticationWithSshKey Mutability

* Correct dataDiskParameters mutability

* Fix Prettier Issues

Author: michaelwstark

specification/devtestlabs/resource-manager/Microsoft.DevTestLab/stable/2018-09-15/DTL.json

@@ -10281,6 +10281,7 @@
         },
         "labStorageType": {
           "description": "Type of storage used by the lab. It can be either Premium or Standard. Default is Premium.",
+          "default": "Premium",
           "enum": [
             "Standard",
             "Premium",
@@ -10575,11 +10576,13 @@
         },
         "password": {
           "description": "The password of the virtual machine administrator.",
-          "type": "string"
+          "type": "string",
+          "x-ms-secret": true
         },
         "sshKey": {
           "description": "The SSH key of the virtual machine administrator.",
-          "type": "string"
+          "type": "string",
+          "x-ms-secret": true
         },
         "isAuthenticationWithSshKey": {
           "description": "Indicates whether this virtual machine uses an SSH key for authentication.",
@@ -10629,6 +10632,7 @@
         },
         "storageType": {
           "description": "Storage type to use for virtual machine (i.e. Standard, Premium).",
+          "default": "labStorageType",
           "type": "string"
         },
         "environmentId": {
@@ -10739,11 +10743,13 @@
         },
         "password": {
           "description": "The password of the virtual machine administrator.",
-          "type": "string"
+          "type": "string",
+          "x-ms-secret": true
         },
         "sshKey": {
           "description": "The SSH key of the virtual machine administrator.",
-          "type": "string"
+          "type": "string",
+          "x-ms-secret": true
         },
         "isAuthenticationWithSshKey": {
           "description": "Indicates whether this virtual machine uses an SSH key for authentication.",
@@ -10813,6 +10819,7 @@
         },
         "storageType": {
           "description": "Storage type to use for virtual machine (i.e. Standard, Premium).",
+          "default": "labStorageType",
           "type": "string"
         },
         "virtualMachineCreationSource": {
@@ -11042,6 +11049,7 @@
       "properties": {
         "status": {
           "description": "If notifications are enabled for this schedule (i.e. Enabled, Disabled).",
+          "default": "Disabled",
           "enum": [
             "Enabled",
             "Disabled"
@@ -11565,7 +11573,8 @@
         },
         "location": {
           "description": "The location of the new virtual machine or environment",
-          "type": "string"
+          "type": "string",
+          "readOnly": true
         },
         "tags": {
           "description": "The tags of the resource.",
@@ -11587,6 +11596,7 @@
       "properties": {
         "status": {
           "description": "The status of the schedule (i.e. Enabled, Disabled)",
+          "default": "Disabled",
           "enum": [
             "Enabled",
             "Disabled"
@@ -11665,6 +11675,7 @@
       "properties": {
         "status": {
           "description": "The status of the schedule (i.e. Enabled, Disabled)",
+          "default": "Disabled",
           "enum": [
             "Enabled",
             "Disabled"