rootfs: sleep 1 second during snmp restart

When snmpd's init script is called with restart option then script complain
that snmp is already running. Probalby it takes some short time to kill snmp.
Add sleep 1 second to solve this problem.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/rootfs_override/etc/init.d/snmpd

@@ -43,6 +43,8 @@ stop() {
 
 restart() {
     stop
+    # give time to snmpd to stop
+    sleep 1
     start
 }