Creation of OTS-OMS interfaces

Creation of OTS-OMS interfaces

- add new rpc in renderer@2017-02-28.yang
- add 2 methods in OpenRoadmInterfaceFactory.java to create ots and oms
interfaces on ROADM configuration datastore
- add method in PortMappingImpl.java to update the associated mapping
with new interfaces just created
- modify DeviceRendererServiceImplTest.java and
RendererServiceOperationsImplTest.java to take into account blueprint
modification..

Change-Id: I4eb21aed513a5378d23559827bc581dad60412a3
JIIRA: TRNSPRTPCE-8
JIIRA: TRNSPRTPCE-33
Signed-off-by: Gilles Thouenon <gilles.thouenon@orange.com>
Co-authored-by: Christophe Betoule <christophe.betoule@orange.com>