Log Message:
Update py-pip to 9.0.1

Changes:
* Correct the deprecation message when not specifying a --format
  so that it uses the correct setting name (format) rather than the
  incorrect one (list_format) (#4058).
* Fix pip check to check all available distributions and not just the local
  ones (#4083).
* Fix a crash on non ASCII characters from lsb_release (#4062).
* Fix an SyntaxError in an an used module of a vendored dependency (#4059).
* Fix UNC paths on Windows (#4064).