Introduce Maven Snyk CLI scanner jobs. These jobs can be triggered
to download the latest version of Snyk's CLI scanner and trigger a
scan for Maven based repos.
These jobs produce a report which is published into Snyk's dashboard.
These reports are fetched and reflected back into the LFX Security tool.
Issue: RELENG-4609
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I183bd1e8d22caa832b04b7d1d5b078b0a8946285