Switch build-scheduled to an official build phase.

buildman/server.py

@@ -182,7 +182,7 @@ class BuilderServer(object):
       if schedule_success:
         logger.debug('Marking build %s as scheduled', build_job.repo_build.uuid)
         status_handler = StatusHandler(self._build_logs, build_job.repo_build.uuid)
-        status_handler.set_phase('build-scheduled')
+        status_handler.set_phase(database.BUILD_PHASE.BUILD_SCHEDULED)
 
         self._job_count = self._job_count + 1
         logger.debug('Build job %s scheduled. Running: %s', build_job.repo_build.uuid,

data/database.py

@@ -515,6 +515,7 @@ class BUILD_PHASE(object):
   """ Build phases enum """
   ERROR = 'error'
   INTERNAL_ERROR = 'internalerror'
+  BUILD_SCHEDULED = 'build-scheduled'
   UNPACKING = 'unpacking'
   PULLING = 'pulling'
   BUILDING = 'building'