Regression fixes for command execution

Change-Id: I8591a206268b7afcb8f561f2eab4fc21b2172fc1
Related-PROD: PROD-28199
diff --git a/cfg_checker/cli/command.py b/cfg_checker/cli/command.py
index 8e715f2..9ac05f3 100644
--- a/cfg_checker/cli/command.py
+++ b/cfg_checker/cli/command.py
@@ -32,7 +32,10 @@
 
 def execute_command(args, command):
     # Validate the commands
-    # check command
+    # check commands
+    if not hasattr(args, 'type') or not args.type:
+        logger_cli.info("\n# Please, type a command listed above")
+        return 0
     _type = args.type.replace("-", "_") if "-" in args.type else args.type
     if command not in commands:
         logger_cli.info("\n# Please, type a command listed above")