Code review comment for lp:~rbalint/ubuntu-release-upgrader/ubuntu-release-upgrader-screen

I used this dirty patch to build a test package:

--- a/DistUpgrade/DistUpgradeFetcherCore.py
+++ b/DistUpgrade/DistUpgradeFetcherCore.py
@@ -106,6 +106,8 @@ class DistUpgradeFetcherCore(object):
         except tarfile.ReadError as e:
             logging.error("failed to open tarfile (%s)" % e)
             return False
+ print("fix screen usage")
+ subprocess.call(["cp","/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeMain.py",self.tmpdir])
         return True

     def verifyDistUprader(self):