devstack: odl_snapshot_full_version misargument
devstack: odl_snapshot_full_version misargument

the third argument is taken wrongly as $1.
It should be $3. And fix typo.

Change-Id: I46e1e34fe6bb060198af7e9544cd154f5f7271de

openstack/networking-odl,openstack/networking-odl,openstack/networking-odl