In Docker mode, add options for Network mode, command and arguments

[Phil Winder]

E.g.
mesos.docker.network="HOST"
mesos.docker.command="kibana"
and
mesos.docker.parameter="--port ${MESOS_PORT_0}" (edited)

Port injection consider in another issue.

[Martin Westergaard Lassen]

I think this can be achieved through SPEL, by evaluating the parameter string in the SPEL parser

[Phil Winder]

Duplicate of #25 #27 and #29