redhat: add systemd service files

 * redhat/*.service: add systemd service file for each routing daemon
 * redhat/quagga.sysconfig: add comment about watchquagga and systemd
 * redhat/Makefile.am: add systemd service files to distribution

Signed-off-by: David Ward <david.ward@ll.mit.edu>
Signed-off-by: David Lamparter <equinox@diac24.net>
diff --git a/redhat/Makefile.am b/redhat/Makefile.am
index e037ec5..c83e959 100644
--- a/redhat/Makefile.am
+++ b/redhat/Makefile.am
@@ -1,4 +1,6 @@
 
-EXTRA_DIST = quagga.pam quagga.sysconfig quagga.spec quagga.logrotate \
-	zebra.init ripd.init ospfd.init ripngd.init ospf6d.init bgpd.init \
-	isisd.init babeld.init watchquagga.init quagga.pam.stack
+EXTRA_DIST = babeld.init babeld.service bgpd.init bgpd.service isisd.init \
+	isisd.service ospf6d.init ospf6d.service ospfd.init ospfd.service \
+	quagga.logrotate quagga.pam quagga.pam.stack quagga.spec \
+	quagga.sysconfig ripd.init ripd.service ripngd.init ripngd.service \
+	watchquagga.init zebra.init zebra.service