package/skeleton-init-finit: ensure zebra+ospfd log to syslog

Fix lack of syslog messages from Zebra and add support to easily enable
debug logs for common Zebra subsystems.

Same change made to ospfd for symmetry.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

board/common/rootfs/etc/default/ospfd

@@ -0,0 +1,2 @@
+# --log-level debug
+OSPFD_ARGS="-A 127.0.0.1 -u frr -g frr -f /etc/frr/ospfd.conf --log syslog"

board/common/rootfs/etc/default/zebra

@@ -0,0 +1,2 @@
+# --log-level debug
+ZEBRA_ARGS="-A 127.0.0.1 -u frr -g frr --log syslog "

package/skeleton-init-finit/skeleton/etc/finit.d/available/frr/ospfd.conf

@@ -1 +1,2 @@
-service [2345] log:null <!pid/zebra> ospfd -A 127.0.0.1 -u frr -g frr -f /etc/frr/ospfd.conf -- OSPF daemon
+service <!pid/zebra> env:-/etc/default/ospfd \
+	[2345] ospfd $OSPFD_ARGS -- OSPF daemon

package/skeleton-init-finit/skeleton/etc/finit.d/available/frr/zebra.conf

@@ -1 +1,2 @@
-service [2345] <!> pid:!/run/frr/zebra.pid zebra -A 127.0.0.1 -u frr -g frr -- Zebra routing daemon
+service <!> pid:!/run/frr/zebra.pid env:-/etc/default/zebra \
+	[2345] zebra $ZEBRA_ARGS -- Zebra routing daemon