upgrade db automatically if db is sqlite

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>

master/buildbot/db/connector.py

@@ -112,6 +112,8 @@ def setup(self, check_version=True, verbose=True):
 
             def check_current(res):
                 if not res:
+                    if db_url.startswith("sqlite"):
+                        return self.model.upgrade()
                     for l in upgrade_message.split('\n'):
                         log.msg(l)
                     raise exceptions.DatabaseNotReadyError()