Updated openstack/openstack
Project: openstack/oslo-incubator  ee7c82d6e8245f8525dcda290b05ba71c6f6316f

remove caching param from prettytable call

caching is not a valid option of PrettyTable.
see: https://code.google.com/p/prettytable/source/browse/trunk/prettytable.py

Change-Id: I7c410e6e035226e9449b60c00c48b6c3d0d46e23