Upgrade to latest CherryPy.
Upgrade to latest CherryPy.

We can now move past the UTF-8 encoding issues of 6.0.0 - 7.1.0 since
the UTF-8 encoded test filename was removed from the package here:
  https://github.com/cherrypy/cherrypy/commit/b8e2518d

See the changelog here:
  https://github.com/cherrypy/cherrypy/blob/v8.0.0/CHANGES.txt

Reviewed at https://reviews.apache.org/r/51615/

thinker0/aurora,rdelval/aurora,apache/aurora,thinker0/aurora,medallia/aurora,rdelval/aurora,rdelval/aurora,medallia/aurora,crashlytics/aurora,apache/aurora,medallia/aurora,medallia/aurora,rdelval/aurora,crashlytics/aurora,crashlytics/aurora,crashlytics/aurora,rdelval/aurora,rdelval/aurora,thinker0/aurora,medallia/aurora,thinker0/aurora,apache/aurora,apache/aurora,medallia/aurora,crashlytics/aurora,apache/aurora,apache/aurora,thinker0/aurora,thinker0/aurora,crashlytics/aurora