Add support for Fedora 20

The list of RPM packages have been updated to support the recently
released Fedora 20 distribution.

Closes-Bug: #1263291

Co-Authored: Alvaro Lopez Ortega <alvaro@gnu.org>
Change-Id: Ia66abef1a1a54e6d5ee6eebc12908cef3f1d211d
diff --git a/stack.sh b/stack.sh
index ce5fbd4..4e12c45 100755
--- a/stack.sh
+++ b/stack.sh
@@ -12,7 +12,7 @@
 # developer install.
 
 # To keep this script simple we assume you are running on a recent **Ubuntu**
-# (12.04 Precise or newer) or **Fedora** (F16 or newer) machine.  (It may work
+# (12.04 Precise or newer) or **Fedora** (F18 or newer) machine.  (It may work
 # on other platforms but support for those platforms is left to those who added
 # them to DevStack.)  It should work in a VM or physical server.  Additionally
 # we maintain a list of ``apt`` and ``rpm`` dependencies and other configuration
@@ -131,7 +131,7 @@
 
 # Warn users who aren't on an explicitly supported distro, but allow them to
 # override check and attempt installation with ``FORCE=yes ./stack``
-if [[ ! ${DISTRO} =~ (oneiric|precise|quantal|raring|saucy|trusty|7.0|wheezy|sid|testing|jessie|f16|f17|f18|f19|opensuse-12.2|rhel6) ]]; then
+if [[ ! ${DISTRO} =~ (oneiric|precise|quantal|raring|saucy|trusty|7.0|wheezy|sid|testing|jessie|f18|f19|f20|opensuse-12.2|rhel6) ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"
     if [[ "$FORCE" != "yes" ]]; then
         die $LINENO "If you wish to run this script anyway run with FORCE=yes"