Bug 2351 Speed-up Binding-to-Binding routed RPC Invocation.

Bug 2351 Speed-up Binding-to-Binding routed RPC Invocation.

Current RPC Broker uses LazySerializedContainerNodes
when going thru DOM RPC broker, so in case
RPC is returned it can by-pass deserialization and
use Binding DTO directly.

In case of routed RPCs full serialization to normalized
node was triggered when DOM RPC broker tried to
read RPC route.

This patchset introduces support for LazySerializedContainerNode
to precompute this value and do not use full serialization
when DOM Rpc Broker reads only routing context.

Change-Id: I6d949b5257d40a96ae9edce3bf15c4c3ff932c27
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>