Add plugin config, systemd config, netplan config, software
installation via ssh, and a quick HowTo for setting up a double-nat
test gateway.
Fix a minor doc bug which caused a complaint on vpp-dev@lists.fd.io:
/etc/vpp/startup.conf -> /setup.gate, but the vpp configuration file
wasn't explicitly tagged with the name /setup.gate.
Type: docs
Change-Id: Ib219040d7c3c8b50ed66f8e9d3afd3dcf51b6b7b
Signed-off-by: Dave Barach <dave@barachs.net>
d455e5a2ef