Make sure iptables-services is installed

The iptables service files are no longer included by default on
Fedora.  This causes the systemctl calls in fixup_stuff.sh to fail
when disabling firewalld in favor of iptables.

Change-Id: If37691d03e3d07ca8b53c541717081beeb184c16
Closes-Bug: #1462347
diff --git a/tools/fixup_stuff.sh b/tools/fixup_stuff.sh
index 31258d1..4fff57f 100755
--- a/tools/fixup_stuff.sh
+++ b/tools/fixup_stuff.sh
@@ -126,6 +126,9 @@
         # [4] http://docs.openstack.org/developer/devstack/guides/neutron.html
         if is_package_installed firewalld; then
             sudo systemctl disable firewalld
+            # The iptables service files are no longer included by default,
+            # at least on a baremetal Fedora 21 Server install.
+            install_package iptables-services
             sudo systemctl enable iptables
             sudo systemctl stop firewalld
             sudo systemctl start iptables