fix(client): update PyInstaller to package requests lib properly

The versions of the deis CLI created by "make -C client/ build"
were using PyInstaller 2.1, the current release. This updates
PyInstaller used for packaging to a current SHA, which includes
a hook script for the python requests library to package its
data files correctly.
Merge pull request #2721 from mboersma/fix-pyinstaller-ssl

fix(client): update PyInstaller to package requests lib properly