[Release] Update index.json for extension [ webapp ] (Azure#3726)

Triggered by Azure CLI Extensions Release Pipeline - ADO_BUILD_ID=1024277

Last commit: Azure@bf4b942

Author: Azure CLI Bot

src/index.json

@@ -22392,6 +22392,51 @@
                     "version": "0.3.1"
                 },
                 "sha256Digest": "1cd5bb1a8ad02a5f7c8c72a01692637fed434b24ea359d21caf919ed5323941a"
+            },
+            {
+                "downloadUrl": "https://azcliprod.blob.core.windows.net/cli-extensions/webapp-0.4.0-py2.py3-none-any.whl",
+                "filename": "webapp-0.4.0-py2.py3-none-any.whl",
+                "metadata": {
+                    "azext.isPreview": true,
+                    "azext.minCliCoreVersion": "2.23.0",
+                    "classifiers": [
+                        "Development Status :: 4 - Beta",
+                        "Intended Audience :: Developers",
+                        "Intended Audience :: System Administrators",
+                        "Programming Language :: Python",
+                        "Programming Language :: Python :: 2",
+                        "Programming Language :: Python :: 2.7",
+                        "Programming Language :: Python :: 3",
+                        "Programming Language :: Python :: 3.4",
+                        "Programming Language :: Python :: 3.5",
+                        "Programming Language :: Python :: 3.6",
+                        "License :: OSI Approved :: MIT License"
+                    ],
+                    "extensions": {
+                        "python.details": {
+                            "contacts": [
+                                {
+                                    "email": "[email protected]",
+                                    "name": "Sisira Panchagnula",
+                                    "role": "author"
+                                }
+                            ],
+                            "document_names": {
+                                "description": "DESCRIPTION.rst"
+                            },
+                            "project_urls": {
+                                "Home": "https://github.com/Azure/azure-cli-extensions/tree/master/src/webapp"
+                            }
+                        }
+                    },
+                    "generator": "bdist_wheel (0.30.0)",
+                    "license": "MIT",
+                    "metadata_version": "2.0",
+                    "name": "webapp",
+                    "summary": "Additional commands for Azure AppService.",
+                    "version": "0.4.0"
+                },
+                "sha256Digest": "908b0df07cef652176a0f2bf0fdcf58b5d16fb4903ee3c06f73f0bb3913a5c0f"
             }
         ],
         "webpubsub": [