Adding upstream version 3.1.0+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/yanglint/modules/moddefault.yang

@@ -0,0 +1,19 @@
+module moddefault {
+  namespace "urn:yanglint:moddefault";
+  prefix md;
+
+  container mdc {
+    leaf lf {
+      type uint16;
+    }
+    leaf di {
+      type int16;
+      default "5";
+    }
+    leaf ds {
+      type string;
+      default "str";
+    }
+  }
+
+}