The lttng CLI must check for illegal combinations of the
--ctrl-url, --data-url, --set-url, and --output options.
The following combinations are mutually exclusive:
1) --set-url
2) --ctrl-url + --data-url
3) --output
Combining these incompatible options resulted in unhelpful
generic error messages since the error is catched a lot farther
than it should.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>