Fix lain yaml error msg

Author: xtao

lain_cli/utils.py

@@ -45,13 +45,13 @@ def help_message(self):
 def get_lain_yaml_path(stage=None):
     if stage is None:
         return LAIN_YAML_PATH
-    return "lain.%s.yaml" % stage
+    return "./lain.%s.yaml" % stage
 
 
 def lain_yaml_data(stage=None):
     lain_yaml_path = get_lain_yaml_path(stage=stage)
     if not os.path.exists(lain_yaml_path):
-        error('Missing lain.yaml under current directory')
+        error('Missing %s under current directory' % lain_yaml_path)
         sys.exit(1)
     with open(lain_yaml_path) as f:
         data = f.read()
@@ -61,7 +61,7 @@ def lain_yaml_data(stage=None):
 def lain_yaml(ignore_prepare=False, stage=None):
     lain_yaml_path = get_lain_yaml_path(stage=stage)
     if not os.path.exists(lain_yaml_path):
-        error('Missing lain.yaml under current directory')
+        error('Missing %s under current directory' % lain_yaml_path)
         sys.exit(1)
     return LainYaml(lain_yaml_path, ignore_prepare=ignore_prepare)