twister: add trace print in exception

add trace print when exception happens

Signed-off-by: Hake Huang <[email protected]>

scripts/pylib/twister/twisterlib/error.py

@@ -2,29 +2,32 @@
 #
 # Copyright (c) 2018-2022 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
+import traceback
 
 class TwisterException(Exception):
-    pass
+    print(traceback.format_exc())
 
 
 class TwisterRuntimeError(TwisterException):
-    pass
+    print(traceback.format_exc())
 
 
 class ConfigurationError(TwisterException):
     def __init__(self, cfile, message):
         TwisterException.__init__(self, str(cfile) + ": " + message)
+        print(traceback.format_exc())
 
 
 class BuildError(TwisterException):
-    pass
+    print(traceback.format_exc())
 
 
 class ExecutionError(TwisterException):
-    pass
+    print(traceback.format_exc())
 
 
 class StatusAttributeError(TwisterException):
     def __init__(self, cls : type, value):
         msg = f'{cls.__name__} assigned status {value}, which could not be cast to a TwisterStatus.'
         super().__init__(msg)
+        print(traceback.format_exc())