add ppp and watchdog to snappy image

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (2.341) UNRELEASED; urgency=medium
+
+  * add ppp and watchdog packages to snappy
+
+ -- Oliver Grawert <ogra@ubuntu.com>  Mon, 07 Sep 2015 18:32:15 +0200
+
 livecd-rootfs (2.340) wily; urgency=medium
 
   [ Michael Vogt ]

live-build/auto/config

@@ -382,6 +382,8 @@ case $PROJECT in
 			add_package install dbus
 			add_package install isc-dhcp-client
 			add_package install libpam-systemd
+			add_package install ppp
+			add_package install watchdog
 			# no Task: header yet
 			add_package install ubuntu-snappy