filter /api/v2/users/N/tokens/ to only show tokens for _that_ user

see: https://github.com/ansible/tower/issues/1773

awx/api/urls/user.py

@@ -15,7 +15,7 @@ from awx.api.views import (
     UserActivityStreamList,
     UserAccessList,
     OAuth2ApplicationList,
-    OAuth2TokenList,
+    OAuth2UserTokenList,
     OAuth2PersonalTokenList,
     UserAuthorizedTokenList,
 )
@@ -32,7 +32,7 @@ urls = [
     url(r'^(?P<pk>[0-9]+)/activity_stream/$', UserActivityStreamList.as_view(), name='user_activity_stream_list'),
     url(r'^(?P<pk>[0-9]+)/access_list/$', UserAccessList.as_view(), name='user_access_list'),
     url(r'^(?P<pk>[0-9]+)/applications/$', OAuth2ApplicationList.as_view(), name='o_auth2_application_list'),
-    url(r'^(?P<pk>[0-9]+)/tokens/$', OAuth2TokenList.as_view(), name='o_auth2_token_list'),
+    url(r'^(?P<pk>[0-9]+)/tokens/$', OAuth2UserTokenList.as_view(), name='o_auth2_token_list'),
     url(r'^(?P<pk>[0-9]+)/authorized_tokens/$', UserAuthorizedTokenList.as_view(), name='user_authorized_token_list'),
     url(r'^(?P<pk>[0-9]+)/personal_tokens/$', OAuth2PersonalTokenList.as_view(), name='o_auth2_personal_token_list'),
     

awx/api/views.py

@@ -1598,6 +1598,18 @@ class OAuth2TokenList(ListCreateAPIView):
     model = OAuth2AccessToken
     serializer_class = OAuth2TokenSerializer
     swagger_topic = 'Authentication'
+
+
+class OAuth2UserTokenList(SubListCreateAPIView):
+
+    view_name = _("OAuth2 User Tokens")
+
+    model = OAuth2AccessToken
+    serializer_class = OAuth2TokenSerializer
+    parent_model = User
+    relationship = 'main_oauth2accesstoken'
+    parent_key = 'user'
+    swagger_topic = 'Authentication'
     
     
 class OAuth2AuthorizedTokenList(SubListCreateAPIView):