Update SimNet test to the new format (#4051)

* simnet-v10 update simnet image version

* update config

* update path to js scripts

* use current branch to download config for tests

* use current branch to download config for tests

* temp use simnet-v10

* update also the toml file

* Rework test according to CIHelper format

* Call cihelper script for running tests

* Switch to v12

* Version 13

* simnet v14

* Readme extended

Co-authored-by: Anton Gavrilov <AntonE.Gavrilov@gmail.com>
Co-authored-by: Denis Pisarev <denis.pisarev@parity.io>