twister: Don't require test_ prefix to set status

If a test doesn't start with test_, twister currently emits an error:
suite_name.test_name: Unknown status 'started'

Following the suggestion by Maksim Masalski on PR#21191, change the
regex to exclude spaces in the test name, and remove the check that the
test_ prefix exists.

See also #21162

Signed-off-by: Jeremy Bettis <jbettis@google.com>

Author: jeremybettis

scripts/pylib/twister/twisterlib/harness.py

@@ -24,7 +24,7 @@
 _WINDOWS = platform.system() == 'Windows'
 
 
-result_re = re.compile(r".*(PASS|FAIL|SKIP) - (test_)?(.*) in (\d*[.,]?\d*) seconds")
+result_re = re.compile(r".*(PASS|FAIL|SKIP) - (test_)?(\S*) in (\d*[.,]?\d*) seconds")
 class Harness:
     GCOV_START = "GCOV_COVERAGE_DUMP_START"
     GCOV_END = "GCOV_COVERAGE_DUMP_END"
@@ -527,7 +527,7 @@ def handle(self, line):
 
         result_match = result_re.match(line)
 
-        if result_match and result_match.group(2):
+        if result_match:
             matched_status = result_match.group(1)
             name = "{}.{}".format(self.id, result_match.group(3))
             tc = self.instance.get_case_or_create(name)