This commit expands Twister's CLI so that arguments passed after
a double dash (`--`) get forwarded to the ztest test executable when
run. When built for native_posix, ztest provides a useful CLI that
allows filtering individual suites and tests, adjusting timing settings,
and controlling the shuffling seed. Currently there is no easy way to
use these (with the exception of `--seed`) without needing to dig out
the resulting `zephyr.exe` binary from the build dir and invoke it
manually.
### Examples
Run a specific ztest suite only (useful when writing tests and you don't
want to run a long testcase in its entirety)
```
$ scripts/twister \
-p native_posix \
-s
zephyr/tests/lib/cmsis_dsp/complexmath/libraries.cmsis_dsp.complexmath \
-- -test=complexmath_q31::*
```
Unrecognized arguments that precede the double dash will result in an
error message:
```
$ scripts/twister \
-p native_posix \
--foobar 123 \
-- -test=basic_math_q7::*
...
Unrecognized arguments found: '--foobar 123'. Use -- to delineate extra
arguments for test binary or pass -h for help.
```
Signed-off-by: Tristan Honscheid <honscheid@google.com>
ea33f2fce4