[ONOS-4616] grouping linker issues fixed and other defect fixed.

Change-Id: I1b23f9ed0293edbc2d551efe82982559eb916ede
diff --git a/utils/yangutils/src/test/resources/LengthStatementWithSpace.yang b/utils/yangutils/src/test/resources/LengthStatementWithSpace.yang
new file mode 100644
index 0000000..e8612d1
--- /dev/null
+++ b/utils/yangutils/src/test/resources/LengthStatementWithSpace.yang
@@ -0,0 +1,10 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    leaf invalid-interval {
+        type string {
+            length "                                               0                                                                                      ..                                                                                                                                                                      100                                                                                         ";
+         }
+    }
+}