Upgrade AppConfig extension version from 0.4.0 to 0.5.0 (#661)

* Upgrade AppConfig extension verstion from 0.4.0 to 0.5.0

* format downloadUrl

* update wheel version to 0.30.0

Author: recao

src/index.json

@@ -267,8 +267,8 @@
         ],
         "appconfig": [
             {
-                "downloadUrl": "https://azconfigextension.blob.core.windows.net/appconfigextension/appconfig-0.4.0-py2.py3-none-any.whl",
-                "filename": "appconfig-0.4.0-py2.py3-none-any.whl",
+                "downloadUrl": "https://azconfigextension.blob.core.windows.net/appconfigextension/appconfig-0.5.0-py2.py3-none-any.whl",
+                "filename": "appconfig-0.5.0-py2.py3-none-any.whl",
                 "metadata": {
                     "azext.isPreview": true,
                     "azext.minCliCoreVersion": "2.0.24",
@@ -315,9 +315,9 @@
                         }
                     ],
                     "summary": "Provides a preview for upcoming App Configuration features.",
-                    "version": "0.4.0"
+                    "version": "0.5.0"
                 },
-                "sha256Digest": "9e9d191c74ce2cb23927eef6b353bd9ae2c7ceee9e22de744b59dccbe3875287"
+                "sha256Digest": "1dcafa58df0e1e98ae93665c938712e95ca4237ca263d395a6f5af411f8e0d69"
             }
         ],
         "application-insights": [