[App Service] Fix auth v2 migration, SP detection, and new auth parameters

src/azure-cli/azure/cli/command_modules/appservice/_help.py

@@ -1357,21 +1357,21 @@
 
 helps['webapp auth'] = """
 type: group
-short-summary: Manage webapp authentication and authorization. To use v2 auth commands, run "az extension add --name authV2" to add the authV2 CLI extension.
+short-summary: Manage webapp authentication and authorization. Supports both v1 and v2 auth configurations. Commands automatically detect and use v2 auth settings when configured.
 """
 
 helps['webapp auth show'] = """
 type: command
-short-summary: Show the authentification settings for the webapp.
+short-summary: Show the authentication settings for the webapp. Automatically returns v2 auth settings if the app is configured with v2 auth.
 examples:
-  - name: Show the authentification settings for the webapp. (autogenerated)
+  - name: Show the authentication settings for the webapp.
     text: az webapp auth show --name MyWebApp --resource-group MyResourceGroup
     crafted: true
 """
 
 helps['webapp auth update'] = """
 type: command
-short-summary: Update the authentication settings for the webapp.
+short-summary: Update the authentication settings for the webapp. Automatically uses v2 auth API when the app is configured with v2 auth or when v2-specific parameters are provided.
 examples:
   - name: Enable AAD by enabling authentication and setting AAD-associated parameters. Default provider is set to AAD. Must have created a AAD service principal beforehand.
     text: >
@@ -1385,6 +1385,9 @@
         az webapp auth update -g myResourceGroup -n myUniqueApp --action AllowAnonymous \\
           --facebook-app-id my_fb_id --facebook-app-secret my_fb_secret \\
           --facebook-oauth-scopes public_profile email
+  - name: Enable HTTPS requirement for authentication requests (v2 auth)
+    text: >
+        az webapp auth update -g myResourceGroup -n myUniqueApp --require-https true
 """
 
 helps['webapp browse'] = """

src/azure-cli/azure/cli/command_modules/appservice/_params.py

@@ -917,6 +917,10 @@ def load_arguments(self, _):
         c.argument('microsoft_account_client_secret', arg_group='Microsoft', help='AAD V2 Application client secret')
         c.argument('microsoft_account_oauth_scopes', nargs='+',
                    help="One or more Microsoft authentification scopes (comma-delimited).", arg_group='Microsoft')
+        c.argument('require_https', options_list=['--require-https'],
+                   arg_type=get_three_state_flag(return_label=True), arg_group='Auth V2',
+                   help='Require HTTPS for authentication requests. When using v2 auth, '
+                        'configures the HTTP settings to require HTTPS.')
 
     with self.argument_context('webapp hybrid-connection') as c:
         c.argument('name', arg_type=webapp_name_arg_type, id_part=None)