ONOS-3658 - Adding REST APIs for query and management of device keys.

Change-Id: I3c70660a15d9085409e43d2d14120d29fd5020be
diff --git a/web/api/src/test/resources/org/onosproject/rest/post-device-key.json b/web/api/src/test/resources/org/onosproject/rest/post-device-key.json
new file mode 100644
index 0000000..679c5bd
--- /dev/null
+++ b/web/api/src/test/resources/org/onosproject/rest/post-device-key.json
@@ -0,0 +1,7 @@
+{
+  "id": "DeviceKeyId3",
+  "type": "USERNAME_PASSWORD",
+  "label": "DeviceKeyLabel3",
+  "username": "DeviceKeyUsername3",
+  "password": "DeviceKeyPassword3"
+}