fix return value at openmano client -sdn- commands
fix return value at openmano client -sdn- commands

Change-Id: If0b376aa63ae01976dcce1c4da8cdbf91af6e015
Signed-off-by: tierno <51bab9660ca99329005a6d64fa97d56da061cb58@telefonica.com>

igordcard/RO,igordcard/RO