Enable devstack for Ubuntu 15.10 Wily

Change-Id: I2056fd26d42f29ececc4c38fdd791589ec7037a0
diff --git a/stack.sh b/stack.sh
index bdbb025..72253f8 100755
--- a/stack.sh
+++ b/stack.sh
@@ -178,7 +178,7 @@
 
 # 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} =~ (precise|trusty|vivid|7.0|wheezy|sid|testing|jessie|f21|f22|rhel7) ]]; then
+if [[ ! ${DISTRO} =~ (precise|trusty|vivid|wily|7.0|wheezy|sid|testing|jessie|f21|f22|rhel7) ]]; 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"