bitbake: toaster: enable remote HTTP API for status aggregation

Add support for Toaster aggregators with a set of api links that
return JSON data for (a) builds in progress, (b) builds completed,
(c) specific build data, and (d) an is-alive health ping link.

[YOCTO #11794]

(Bitbake rev: d8e79661c69671dd424dca5cc3f7f2f855b0afed)

Signed-off-by: David Reyna <David.Reyna@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastermain/urls.py

@@ -20,9 +20,8 @@
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 from django.conf.urls import patterns, include, url
-from django.views.generic import RedirectView
+from django.views.generic import RedirectView, TemplateView
 from django.views.decorators.cache import never_cache
-
 import bldcollector.views
 
 import logging
@@ -46,6 +45,8 @@ urlpatterns = [
     # in the future.
     url(r'^orm/eventfile$', bldcollector.views.eventfile),
 
+    url(r'^health$', TemplateView.as_view(template_name="health.html"), name='Toaster Health'),
+
     # if no application is selected, we have the magic toastergui app here
     url(r'^$', never_cache(RedirectView.as_view(url='/toastergui/', permanent=True))),
 ]