Use sys.exit instead of exit

bin/cc-cli

@@ -165,7 +165,7 @@ except BadArgument as e:
     printer.error("Bad Argument: %s"%str(e))
     oparser.print_help()
 except KeyboardInterrupt:
-    exit(1)
+    sys.exit("Interrupted")
 except cliError as e:
     printer.error("%s: %s"%(type(e), str(e)))
 except Exception as e: