Making the host ip device configurable

[MaciejKaszynski]

• Currently the IP address of the QEMU VM is hard-coded as the parameter has the default value that is never set this adds an optional config field host_ip.
  • This is backward compatible as the default will still be the old IP address.
• For the QEMU instance also made the second network device optional and dependent on having the host_diagnostic_ip optional configuration field.
• Made the data_router_config configuration field optional so that if nothing is configured no dlt is created.
• Made all the targets take in an ECU config as a parameter instead of having each config field as a parameter.

[draganbjedov]

You are missing with. DltReceive is context manager. In other targets as well.