config: piped master config inlined for workers

Configuration piped to master gets sent over to the workers
by means of inlining, by converting their cli argument vectors
to accept an inlined configuration.
This addresses part 2 of issue #43, instead of using IPC style
of passing in arguments to workers.
That is happening on line below it ie: https://github.com/indutny/bud/pull/55/files#diff-6d43366beb3c8f97e0882085de8da0ebR350