Log Message:
py-uwsgi: updated to 2.0.17

Changes 2.0.17:
The Emperor throttling subsystem does not make use anymore of blocking \ 
functions, like usleep(), this should fix stats serving and should improve \ 
vassals startup time
[Security/PHP] enforce DOCUMENT_ROOT check when using –php-docroot to avoid \ 
directory traversal
added –shutdown-sockets to improve graceful shutdowns