BUG 2412 - restconf @POST invokeRpc with nopayload method

* migration to new faster Infrastructure API and Codecs for method
@POST invokeRpc(String,String,UriInfo) on @Path {/operations/identifier}

New faster Infrastructure API works with NormizedNodeContext and
we are replacing rpc call method from RestconfService
to use NormalizedNodeContext

* add DOMRpcService -> DOMRpcRouter as rpcRoutingTable holder (it needs to change
in future commit, because we have SchemaContextListener in ControllerContext
and we can have own RpcRoutingTable management there

* fix tests (InvokeRpcMethodTest)
* ignore tests - which are not able to fix now
* remove old codecs from integration test suites to be sure of using corrct codecs

Change-Id: I44119bf0337a1f714991a0e003dabab2da482d23
Signed-off-by: Vaclav Demcak <vdemcak@cisco.com>