[ONOS-3892,3895,3882,3883,3896]Unit test of yang container, list, leaf, leaf-list parser

Change-Id: Iae040d9d354e012584db8adc0aa7ff1ea4c099a0
diff --git a/src/test/resources/ContainerRootNode.yang b/src/test/resources/ContainerRootNode.yang
new file mode 100644
index 0000000..441d717
--- /dev/null
+++ b/src/test/resources/ContainerRootNode.yang
@@ -0,0 +1,9 @@
+container valid {
+    reference "RFC 6020";
+    leaf invalid-interval {
+        type "uint16";
+        units "seconds";
+        status current;
+        reference "RFC 6020";
+    }
+}
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