Modify RPM lists for RHEL6

Modifications to the RPM list to make devstack work on RHEL6.  Makes
various packages only install on Fedora distros; generally letting pip
install the missing dependencies on RHEL.

Additionally the Qpid package name is different in RHEL6 to Fedora.
Also a small re-write of the config file is required to avoid
authenication issues.

Change-Id: If497099d27aa9cd80e1c1cee1aff2ed6b076d309
diff --git a/files/rpms/swift b/files/rpms/swift
index ce41ceb..1b36e34 100644
--- a/files/rpms/swift
+++ b/files/rpms/swift
@@ -8,8 +8,8 @@
 python-greenlet
 python-netifaces
 python-nose
-python-paste-deploy
-python-setuptools
+python-paste-deploy # dist:f16,f17,f18
+python-setuptools   # dist:f16,f17,f18
 python-simplejson
 python-webob
 pyxattr