YANG: Restriction resolution implementation

Change-Id: I69503e8229def07b289a0c8c762bfe0ae5530232
diff --git a/utils/yangutils/src/test/resources/SelfFileLinkingWithGroupingWithSelfAndExternalPrefixMix.yang b/utils/yangutils/src/test/resources/SelfFileLinkingWithGroupingWithSelfAndExternalPrefixMix.yang
index 84236a2..b6e3b45 100644
--- a/utils/yangutils/src/test/resources/SelfFileLinkingWithGroupingWithSelfAndExternalPrefixMix.yang
+++ b/utils/yangutils/src/test/resources/SelfFileLinkingWithGroupingWithSelfAndExternalPrefixMix.yang
@@ -7,14 +7,14 @@
     }
     grouping Percentage {
         leaf hello{
-            type String;
+            type string;
         }
     }
     container ospf {
         list valid {
             key "invalid";
-	    leaf invalid{
-                type String;
+            leaf invalid{
+                type string;
             }
             uses Ant:FirstClass;
             grouping FirstClass {