Add Schemata::Router::StartMessage

Change-Id: Iaf077aea423b06e4f817bc32e774fe425651f489
Add DeaStatusResponse

Change-Id: I40ee9a12f73f50d93be9c10ba9e6ade09498e945
Add Schemata::Router::RegisterRequest

Change-Id: I45a60f4f8f66b3300d43e8824a2a4edf41a15574
Add Schemata::DEA::StartRequest

Change-Id: Icfbacb0cbb1f0ab91afc49a8ae7ef153cba3fda1
Add Schemata::DEA::StopRequest

Change-Id: I4f04583e8950cabbd546c9f42531f35e75f029a3