Fixed error, where importing PIL warned about permission denied

Newer version of Pillow doesn't have _imaging module. Use PIL instead.

Basically, we need to initialize Pillow, which does internally ctypes.dlopen('libjpeg.so.0.8') which further opens /dev/proc/auxv to optimize JPEG decoding. 

Ralph setup needs currently setcap net_raw on python process, which doesn't works seamlesly with libjpeg turbo optimization, which produces werid `Permission denied` error output problem from actually library below, not python code at all. 

What we are trying to do is a workaround to reset error stream (duplicate error output descriptor, and clean-up).

The real solution is just to *run rqworker processes as root process or higher level permissions*