pin berskfile.lock

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add tools: netcat, nethogs, autoconf

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
extend gem installation timeout due to gecode compilation

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>