feature: support new robcop lint warnings

Signed-off-by: Christoph Hartmann <chris@lollyrock.com>
update readme with more test instructions

Signed-off-by: Christoph Hartmann <chris@lollyrock.com>
Merge pull request #43 from TelekomLabs/lint

Lint
only fix a minimum versoin for sysctl

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