* actually disable stdout/stderr. stdout>stderr
* for pure runner this turns it off for real this time.
* this also just makes the agent container type send stdout to stderr, since
we're not using stdout for function output anymore this is pretty
straightforward hopefully.
* I added a panic and some type checking printlns to ensure this is true for
pure_runner, both stdout and stderr are off, also added a unit test from agent
to ensure this behavior from its container type, which pure_runner utilizes
(no integration test though)
* tests ensure that logs still work if not trying to disable them (full agent)
* handle non ghost swapping
bf2f96cbeb