buildroot

netsnmp: adjust init script by creating start(), stop(), reload()

Change the init script to get rid of double code. Start, stop and reload
code has been put into separate functions and 'restart' will just call
stop() and start() with a delay in between.

Signed-off-by: Andreas Ehmanns <universeII@gmx.de>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>