** Description changed:

  There are still a lot of bug reports where users cannot upgrade from
  Ubuntu 18.04 LTS to Ubuntu 20.40 LTS due to python still being kept when
  the problem resolver runs. This is due to a bit of code being removed
  when 20.04.31 was uploaded[1]. That code should be restored as it will
  allow more users to upgrade to Ubuntu 20.04 LTS.
  [Test Cases]
  1) lxc launch ubuntu:18.04
  2) Restore the apt-clone file from LP: #1927268
  3) Run do-release-upgrade
  4) Observe a failure to calculate the upgrade to Focal
  With the version of the release upgrader from -proposed (do-release-
  upgrade -p) the upgrade to Focal will be calculated successfully.
  [Where Problems Could Occur]
  This code previously existed in the release upgrader and just ensures that we 
are are moving python from the system. However, there could also be typos in 
the restored code but that would cause a Traceback when running the test case 
so that would get caught.
+ [Other Info]
+ That being said it would be good to get more testing of this version of the 
release upgrader so I'll look at recent bug reports where python is marked for 
keeping (MarkKeep python:amd64 < 2.7.15~rc1-1 @ii gR > FU=0) and ask those 
users to test the release upgrader from -proposed.
- [1] 
+ [1] http://launchpadlibrarian.net/531097604/ubuntu-release-
+ upgrader_1%3A20.04.30_1%3A20.04.31.diff.gz

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  ensure python is marked for removal when upgrading from 18.04 to 20.04

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