ENH: Add option to mount additional drives
ENH: Add option to mount additional drives

Some of the blaze tests populate postgres data from CSV file in the
blaze/ project's directory. Use this option to mount it in docker so
posgres can read data when running those tests.

ContinuumIO/odo,blaze/odo,ContinuumIO/odo,quantopian/odo,blaze/odo,quantopian/odo