Install nose 1.1 from EPEL for RHEL.

 * It's not possible to prevent python-nose (which is not compatible
   with Tempest) from being installed since so many os packages
   dependent on it.
 * This patch installs python-nose1.1 from EPEL and adds a
   /usr/local/bin symlink for nosetests1.1 so that invocations for
   Tempest will work as expected.

Change-Id: I756d1ca5eda127dcdd2efb047c8e14dd344f710d
diff --git a/files/rpms/swift b/files/rpms/swift
index c626d8e..1b36e34 100644
--- a/files/rpms/swift
+++ b/files/rpms/swift
@@ -7,8 +7,7 @@
 python-eventlet
 python-greenlet
 python-netifaces
-# RHEL6's python-nose is incompatible with Tempest
-python-nose         # dist:f16,f17,f18
+python-nose
 python-paste-deploy # dist:f16,f17,f18
 python-setuptools   # dist:f16,f17,f18
 python-simplejson