Allow running of proxy and storage on the same node.

This adds conditionals to support a installation
in which a user desires to run both swift proxy and
storage on the same node.

Change-Id: I0cc827525968a9d1dc836c553a39f0ac13c4667e
(cherry picked from commit af129f0a93009293dba610ee487a41fb15027336)
Update for 3.0.0-rc2.

Updated .gitreview to point to stable/havana branch. Updated Modulefile
with latest version.

Change-Id: I8211c91daed7a72733ea15a72c4cd5216c376c0c
Merge "Update for 3.0.0-rc2." into stable/havana