Properly wrap view functions in decorators.

So the inner function's module and name are shown by the 'show_urls'
command of 'django_extensions'.

swh/web/api/apidoc.py

@@ -290,6 +290,7 @@ def api_doc(route, noargs=False, need_params=False, tags=[],
         if not noargs:
 
             @api_view(['GET', 'HEAD'])
+            @wraps(f)
             def doc_view(request):
                 doc_data = get_doc_data(f, route, noargs)
                 return make_api_response(request, None, doc_data)

swh/web/api/apiurls.py

@@ -3,6 +3,8 @@
 # License: GNU Affero General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
+import functools
+
 from rest_framework.decorators import api_view
 
 from swh.web.common.urlsindex import UrlsIndex
@@ -63,6 +65,7 @@ def api_route(url_pattern=None, view_name=None,
         # create a DRF view from the wrapped function
         @api_view(methods)
         @throttling.throttle_scope(throttle_scope)
+        @functools.wraps(f)
         def api_view_f(*args, **kwargs):
             return f(*args, **kwargs)
         # small hacks for correctly generating API endpoints index doc