Include auth URL data attribute in the programs authoring template

The authoring app requests JWTs from this endpoint.

cms/djangoapps/contentstore/views/program.py

@@ -28,6 +28,7 @@ class ProgramAuthoringView(View):
                 'show_programs_header': programs_config.is_studio_tab_enabled,
                 'authoring_app_config': programs_config.authoring_app_config,
                 'programs_api_url': programs_config.public_api_url,
+                'programs_token_url': reverse('programs_id_token'),
                 'studio_home_url': reverse('home'),
             })
         else:

cms/templates/program_authoring.html

@@ -12,5 +12,5 @@
 </%block>
 
 <%block name="content">
-<div class="js-program-admin program-app layout-1q3q layout-reversed" data-api-url=${programs_api_url} data-home-url=${studio_home_url}></div>
+<div class="js-program-admin program-app layout-1q3q layout-reversed" data-api-url=${programs_api_url} data-auth-url=${programs_token_url} data-home-url=${studio_home_url}></div>
 </%block>