tests: add keyctl variants with different xlat verbosity levels

tests: add keyctl variants with different xlat verbosity levels

* tests/keyctl-Xabbrev.c: New file.
* tests/keyctl-Xraw.c: Likewise.
* tests/keyctl-Xverbose.c: Likewise.
* tests/keyctl.c (XARG_STR): New macro.
(do_keyctl): Print command in accordance with XLAT_RAW/XLAT_VERBOSE settings.
(main): Update expected output.
* tests/pure_executables.list: Add keyctl-Xabbrev, keyctl-Xraw,
and keyctl-Xverbose.
* tests/.gitignore: Likewise.
* tests/gen_tests.in (keyctl-Xabbrev, keyctl-Xraw, keyctl-Xverbose): New
tests.