[ONOS-5805] MEF NRP REST API app for CE App

Migrating MEF NRP API translation app to onos-app-samples.

- Originally developed mainly by Konstantinos Kanonakis <kanonakisk@gmail.com>

- fixed NRP example JSON

Change-Id: If846dab4e08dcd17bc65a475b72fb3dc1a58cd9d
diff --git a/mef-nrp-api/swaggergen/template/README b/mef-nrp-api/swaggergen/template/README
new file mode 100644
index 0000000..3f59280
--- /dev/null
+++ b/mef-nrp-api/swaggergen/template/README
@@ -0,0 +1,7 @@
+Workaround until swagger-code-gen 2.2.2 is released.
+
+Bug report:
+  https://github.com/swagger-api/swagger-codegen/issues/3509
+
+This directory and templateDirectory, additional-properties in pom.xml,
+can be removed after migrating to 2.2.2.