Add REST API for invoking workflow.

Currently, there is no way to invoking using REST API.
I've added REST API.

json data example:

{
  "op": "workflow.invoke",
  "params": {
    "workplace": "Nova-000",
    "id": "of-overlay.workflow-nova",
    "data": {
      "mgmtIp": "192.168.10.8",
      "ovsdbPort": 6641,
      "sshAccessInfo": {
        "remoteIp": "192.168.10.8",
        "port": 22,
        "user": "root",
        "password": "iloveyou",
        "keyfile": "~/.ssh/id_rsa"
      },
      "ovsDatapathType": "system",
      "physicalPorts": [
        "nova0_1"
      ],
      "vtepIp": "120.0.0.200/24",
      "annotations": {
        "rackId": 1,
        "rackPosition": 3
      }
    }
  }
}

Change-Id: I2ce3bc5a59ce1cbe91c8c6f83bd1f25e81933ce3
diff --git a/apps/workflow/app/BUILD b/apps/workflow/app/BUILD
index d5af5a2..a0339da 100644
--- a/apps/workflow/app/BUILD
+++ b/apps/workflow/app/BUILD
@@ -1,10 +1,17 @@
-COMPILE_DEPS = CORE_DEPS + KRYO + JACKSON + CLI + [
+COMPILE_DEPS = CORE_DEPS + KRYO + JACKSON + CLI + REST + [
+    "@jersey_server//jar",
     "//core/store/serializers:onos-core-serializers",
     "//core/store/primitives:onos-core-primitives",
     "//apps/workflow/api:onos-apps-workflow-api",
 ]
 
-osgi_jar(
+osgi_jar_with_tests(
+    api_description = "REST API for workflow",
+    api_package = "org.onosproject.workflow.rest",
+    api_title = "Workflow REST API",
+    api_version = "1.0",
     karaf_command_packages = ["org.onosproject.workflow.cli"],
+    test_deps = TEST_ADAPTERS,
+    web_context = "/onos/workflow",
     deps = COMPILE_DEPS,
 )