... to map vpp node names to dissector handles.
Wireshark has an easy-to-use string to dissector function handle
hashing scheme, so use it. Thanks to Guy Harris for writing up the
incantation.
Change-Id: I6c1eb609332b0afe87154ba447a98f783e13ca68
Signed-off-by: Dave Barach <dave@barachs.net>