ztest: Add config switch for modes of test output

Support verbose or one-line summary at test suite level.
Support verbose or no output at test function level.

Totally 4 combinations configurable:
- function verbose + suite verbose
- function verbose + suite oneline
- no function output + suite verbose
- no function output + suite oneline

Signed-off-by: Ming Shao <ming.shao@intel.com>