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/nova b/files/rpms/nova
index 7ff926b..b8c8528 100644
--- a/files/rpms/nova
+++ b/files/rpms/nova
@@ -28,9 +28,11 @@
 python-migrate
 python-mox
 python-netaddr
-python-paramiko
-python-paste
-python-paste-deploy
+python-paramiko # dist:f16,f17,f18
+# ^ on RHEL, brings in python-crypto which conflicts with version from
+# pip we need
+python-paste        # dist:f16,f17,f18
+python-paste-deploy # dist:f16,f17,f18
 python-qpid
 python-routes
 python-sqlalchemy