added-yang-linter-and-resolved-all-error-produced-by it

Change-Id: Iba95a07bb1ed6230b9a900448bf294355a58285c
diff --git a/config-models/aether-2.x/files/yang/ietf-inet-types.yang b/config-models/aether-2.x/files/yang/ietf-inet-types.yang
index eacefb6..fa57f75 100644
--- a/config-models/aether-2.x/files/yang/ietf-inet-types.yang
+++ b/config-models/aether-2.x/files/yang/ietf-inet-types.yang
@@ -354,11 +354,11 @@
 
   typedef domain-name {
     type string {
+      length "1..253";
       pattern
         '((([a-zA-Z0-9_]([a-zA-Z0-9\-_]){0,61})?[a-zA-Z0-9]\.)*'
       + '([a-zA-Z0-9_]([a-zA-Z0-9\-_]){0,61})?[a-zA-Z0-9]\.?)'
       + '|\.';
-      length "1..253";
     }
     description
      "The domain-name type represents a DNS domain name.  The