TTM: Add migration for the 'testing' status attribute

ttm/publisher.py

@@ -160,6 +160,7 @@ class ToTestPublisher(ToTestManager):
 
     def publish(self, project, force=False):
         self.setup(project)
+
         try:
             current_snapshot = self.version_from_totest_project()
         except NotFoundException as e:
@@ -167,6 +168,11 @@ class ToTestPublisher(ToTestManager):
             self.logger.warn(e)
             current_snapshot = None
 
+        if not self.get_status('testing'):
+            # migrating. Normally the releaser maintains that snapshot, but to differentiate
+            # bootstrap of new project and migration we explicitly set 'NONE' if there is Nothing
+            self.update_status('testing', current_snapshot if current_snapshot else 'NONE')
+
         group_id = self.openqa_group_id()
 
         if self.get_status('publishing') == current_snapshot or self.get_status('published') == current_snapshot:

ttm/releaser.py

@@ -28,6 +28,9 @@ class ToTestReleaser(ToTestManager):
         self.setup(project)
 
         testing_snapshot = self.get_status('testing')
+        if not testing_snapshot:
+            self.logger.debug("No snapshot in testing, waiting for publisher to tell us")
+            return None
         new_snapshot = self.version_from_project()
 
         # not overwriting