Adding parser names for tftp server secure mode and no secure mode
Adding parser names for tftp server secure mode and no secure mode

Change-Id: I3c06d52aa5d5285f76a72551028197513ac4a685
Signed-off-by: Jeevitha Valathooru <3f6caa95fb324d7426bc8b7169560db34746964f@hpe.com>

open-switch/ops-topology-lib-vtysh