Netflix / genie / 2285

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master: 94%

Pull #866

travis-ci

Split command args on space but retain all tokens

Before this our database blocked entry of blank entries for command args in order to save space. However this introduced side effects with constructing
and deconstructing command arguments from the V3 JSON payload which is just one long string. The database is setup now for the future where the arguments
should come in as a List to make escaping easier. The models in the DTOs represent this too but at the API layer we need compatibility so they still
go over the wire as a long string. To try and match V3 behavior the strings are now split on space but all tokens are preserved. In this way when
the string is rebuilt and we join on space the resulting string should be exactly the same as the input.

I would view this entire solution as temporary to get us through the V3->V4 server migration and make sure we have no further regressions. Afterwards this can be
revisited either in a V4 API or a more proper solution that we can slowly break jobs while not conflating those issues with other server migration issues that may
exist.

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