[Azure Functions] Update custom handler schema in host.json (#5581)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: liliankasem

src/schemas/json/host.json

@@ -1146,6 +1146,22 @@
               "description": "Proxy HttpTrigger request to the custom handler",
               "type": "boolean",
               "default": false
+            },
+            "http": {
+              "description": "HTTP configuration for the custom handler",
+              "type": "object",
+              "properties": {
+                "defaultAuthorizationLevel": {
+                  "description": "The default authorization level for HTTP-triggered functions",
+                  "enum": ["anonymous", "function", "admin"],
+                  "default": "anonymous"
+                }
+              },
+              "additionalProperties": false
+            },
+            "port": {
+              "description": "The port on which the custom handler process listens",
+              "type": "integer"
             }
           },
           "additionalProperties": false

src/test/host/host.v2.json

@@ -8,6 +8,19 @@
     "snapshotPersistenceEnabled": true
   },
   "configurationProfile": "sample-profile",
+  "customHandler": {
+    "description": {
+      "arguments": ["--port", "%FUNCTIONS_CUSTOMHANDLER_PORT%"],
+      "defaultExecutablePath": "handler.exe",
+      "workingDirectory": "app"
+    },
+    "enableForwardingHttpRequest": false,
+    "enableProxyingHttpRequest": true,
+    "http": {
+      "defaultAuthorizationLevel": "anonymous"
+    },
+    "port": 3000
+  },
   "extensionBundle": {
     "id": "Microsoft.Azure.Functions.ExtensionBundle",
     "version": "[4.*, 5.0.0)"