add facts recent endpoints

* Hang most recent listing of facts per-host off of /hosts/n/

awx/api/serializers.py

@@ -1157,6 +1157,7 @@ class HostSerializer(BaseSerializerWithVariables):
             ad_hoc_commands = self.reverse('api:host_ad_hoc_commands_list', kwargs={'pk': obj.pk}),
             ad_hoc_command_events = self.reverse('api:host_ad_hoc_command_events_list', kwargs={'pk': obj.pk}),
             fact_versions = self.reverse('api:host_fact_versions_list', kwargs={'pk': obj.pk}),
+            facts_recent = self.reverse('api:host_facts_recent_list', kwargs={'pk': obj.pk}),
         ))
         if obj.inventory:
             res['inventory'] = self.reverse('api:inventory_detail', kwargs={'pk': obj.inventory.pk})

awx/api/urls.py

@@ -114,6 +114,7 @@ host_urls = patterns('awx.api.views',
     #url(r'^(?P<pk>[0-9]+)/single_fact/$',                'host_single_fact_view'),
     url(r'^(?P<pk>[0-9]+)/fact_versions/$',             'host_fact_versions_list'),
     url(r'^(?P<pk>[0-9]+)/fact_view/$',                 'host_fact_compare_view'),
+    url(r'^(?P<pk>[0-9]+)/facts_recent/$',              'host_facts_recent_list'),
 )
 
 group_urls = patterns('awx.api.views',

awx/api/views.py

@@ -1835,6 +1835,15 @@ class HostFactCompareView(SystemTrackingEnforcementMixin, SubDetailAPIView):
         return Response(self.serializer_class(instance=fact_entry).data)
 
 
+class HostFactsRecentList(SubListAPIView):
+
+    model = FactRecent
+    parent_model = Host
+    relationship = 'facts_recent'
+    serializer_class = FactSerializer
+    new_in_320 = True
+
+
 class GroupList(ListCreateAPIView):
 
     model = Group