fix(api): pass if no builds are associated with the release

If an application only has releases with no builds (such as a `deis create`),
the restoration process will bail out because an exception was raised,
killing the controller. However, this is not a concern if no build
is associated with the release, so we can just check and ignore
this case.

Author: Matthew Fisher

rootfs/api/management/commands/load_db_state_to_k8s.py

@@ -24,7 +24,14 @@ def handle(self, *args, **options):
         # deploy applications
         print("Deploying available applications")
         for application in App.objects.all():
-            rel = application.release_set.latest()
-            application.deploy(rel)
+            try:
+                rel = application.release_set.latest()
+                application.deploy(rel)
+            except EnvironmentError as e:
+                if str(e) != 'No build associated with this release':
+                    raise
+                print('WARNING: {} has no build associated with '
+                      'its latest release. Skipping deployment...'.format(application))
+                pass
 
         print("Done Publishing DB state to kubernetes.")