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

Change-Id: Iba95a07bb1ed6230b9a900448bf294355a58285c
diff --git a/config-models/aether-4.x/files/yang/onf-site.yang b/config-models/aether-4.x/files/yang/onf-site.yang
index 7118c97..b5f22c4 100755
--- a/config-models/aether-4.x/files/yang/onf-site.yang
+++ b/config-models/aether-4.x/files/yang/onf-site.yang
@@ -25,6 +25,7 @@
         type yg:yang-identifier {
             length 1..32;
         }
+    description "The typedef for site-id";
   }
 
   container site {
@@ -112,32 +113,34 @@
           description
             "List of edge monitoring devices";
         }
+        description
+            "container for monitoring";
       }
 
       leaf enterprise {
         type leafref {
           path "/ent:enterprise/ent:enterprise/ent:id";
         }
+        mandatory true;
         description
           "Link to enterprise that owns this site";
-        mandatory true;
       }
 
       container imsi-definition {
         leaf mcc {
           type at:mcc;
-          description "mobile country code";
           mandatory true;
+          description "mobile country code";
         }
         leaf mnc {
           type at:mnc;
-          description "mobile network code";
           mandatory true;
+          description "mobile network code";
         }
         leaf enterprise {
           type at:ent;
-          description "enterprise-specific identifier";
           mandatory true;
+          description "enterprise-specific identifier";
         }
         leaf format {
           type string {
@@ -157,6 +160,7 @@
           //   3 digit enterprise ID
           //   5 digit subscriber ID
         }
+        description "container for imsi-defination";
       }
 
       leaf description {