[ReleasePR marketplace] added notifications settings (#1857)

Create to sync Azure/azure-rest-api-specs#15500
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/marketplace?expand=1)

Author: msftbot[bot]

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

@@ -342,6 +342,37 @@
       },
       "description": "The collection details"
     },
+    "NotificationsSettingsProperties": {
+      "type": "object",
+      "properties": {
+        "recipients": {
+          "oneOf": [
+            {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/Recipient"
+              }
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Gets or sets list of notified recipients for new requests"
+        },
+        "sendToAllMarketplaceAdmins": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Gets or sets whether to send email to all marketplace admins for new requests"
+        }
+      },
+      "description": "Describes the json payload for notifications settings"
+    },
     "OfferProperties": {
       "type": "object",
       "properties": {
@@ -497,6 +528,17 @@
           ],
           "description": "Is government"
         },
+        "notificationsSettings": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/NotificationsSettingsProperties"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Describes the json payload for notifications settings"
+        },
         "privateStoreName": {
           "type": "string",
           "description": "Private Store Name"
@@ -663,6 +705,16 @@
       ],
       "description": "Microsoft.Marketplace/privateStores/requestApprovals"
     },
+    "Recipient": {
+      "type": "object",
+      "properties": {
+        "principalId": {
+          "type": "string",
+          "description": "Principal ID"
+        }
+      },
+      "description": "Describes the json payload for a notified recipient for new requests"
+    },
     "RequestApprovalProperties": {
       "type": "object",
       "properties": {