Rewrite lava-server command line from scratch
Rewrite lava-server command line from scratch

The new script does support the same arguments but does not rely on lava-tool
and entry points.

Change-Id: Ie5758b8e87d11d15f61a3fb59dede1d41a1cbf21

Linaro/lava-server,Linaro/lava-server,Linaro/lava-server,Linaro/lava-server