Updated openstack/openstack
Project: openstack/oslo-incubator  957384c6afacb0f861a85ab3f5eb97a284188e82

deprecate cache package

Based on our discussion at the Kilo summit, we indicated that this
module would be marked deprecated but retained until the new library is
created.

https://etherpad.openstack.org/p/kilo-oslo-library-proposals

Change-Id: Ia22f38fd380f4933fac93b002f20b8db4c617180