Reduce Log Noise (failed to retrieve balena-engine-init) and (unknown container)

Hi @jacobrosenthal this was a bug in balena-engine which was fixed in v17.13.4 as well as all the 18.09 versions. Any of the balenaOS versions above 2.32 won’t have this issue anymore. Unfortunately as far as i know it can only be fixed by patching the engine, so upgrading is the best way to reduce the logging.