ttfw: save console log to file

tools/ci/python_packages/tiny_test_fw/Env.py

@@ -44,6 +44,7 @@ class Env(object):
     :keyword env_config_file: test env config file path
     :keyword test_name: test suite name, used when generate log folder name
     """
+    CURRENT_LOG_FOLDER = ""
 
     def __init__(self,
                  app=None,
@@ -59,6 +60,8 @@ class Env(object):
         if not os.path.exists(self.log_path):
             os.makedirs(self.log_path)
 
+        Env.CURRENT_LOG_FOLDER = self.log_path
+
         self.allocated_duts = dict()
         self.lock = threading.RLock()