[ONOS-4016] Implement Region administration REST API

- Impelent Region management REST API
- Add unit test for Region management REST API
- Add swagger docs for Region management REST API
- Add SCR Component and Service annotation for RegionManager

Change-Id: I042e92ed7144d596659b779a59239afba832ca62
diff --git a/web/api/src/test/resources/org/onosproject/rest/post-region.json b/web/api/src/test/resources/org/onosproject/rest/post-region.json
new file mode 100644
index 0000000..087f66e
--- /dev/null
+++ b/web/api/src/test/resources/org/onosproject/rest/post-region.json
@@ -0,0 +1,13 @@
+{
+  "id": 1,
+  "type": "ROOM",
+  "name": "foo",
+  "masters": [
+    [
+      "1"
+    ],
+    [
+      "1", "2"
+    ]
+  ]
+}
\ No newline at end of file