mgmt: no longer need to specify httpserver command line

Just by require()ing httpserver, we now get it running automatically
via a file in /init/. There's no longer a need to add httpserver's
command line explicitly (build will fail if we do).

Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
osvinit: fix linking of osvinit.so

The placement of -l is significant. We should put dynamic libraries
last otherise they will not be recorded as dependencies which leads to
symbol resolution errors like this one:

Failed looking up symbol _ZN4YAML6detail9node_data12empty_scalarE (YAML::detail::node_data::empty_scalar)

Signed-off-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>