python 3.8 cgi.escape function removed

[MattBlack85]

In python 3.8 cgi.escape will be removed

  File "/usr/local/lib/python3.8/site-packages/supervisor/supervisord.py", line 40, in <module>
    from supervisor.options import ServerOptions
  File "/usr/local/lib/python3.8/site-packages/supervisor/options.py", line 54, in <module>
    from supervisor import xmlrpc
  File "/usr/local/lib/python3.8/site-packages/supervisor/xmlrpc.py", line 24, in <module>
    from supervisor.http import NOT_DONE_YET
  File "/usr/local/lib/python3.8/site-packages/supervisor/http.py", line 24, in <module>
    from supervisor.medusa import default_handler
  File "/usr/local/lib/python3.8/site-packages/supervisor/medusa/default_handler.py", line 20, in <module>
    from supervisor.medusa.util import html_repr
  File "/usr/local/lib/python3.8/site-packages/supervisor/medusa/util.py", line 1, in <module>
    from cgi import escape
ImportError: cannot import name 'escape' from 'cgi' (/usr/local/lib/python3.8/cgi.py)

https://docs.python.org/3.8/library/cgi.html