TAPI topology consolidation

TAPI topology consolidation

Modify TAPI topology implementation to give an abstraction of
otn-topology for otn nodes whose network ports are connected to ROADM
through xponder-input/output links. Moreover, abstracts also the ROADM
infrastructure through a Photonic TAPI node. As for xponder-input/output
links, they are represented in by OMS links in the T0 multilayer TAPI
topology.
- add new method in ConvertORTopoToTapiTopo to create the ROADM
  infrastructure abstraction
- add new method in ConvertORTopoToTapiTopo to create OMS links
- create and manage a TapiTopologyException
- refacto TapiTopologyImpl to improve datastore readings
- refacto and improve UT for TapiTopologyImpl and
  ConvertORTopoToTapiTopo classes
- new samples of xml files to adapt portmapping and topologies to new
  TAPI topology code and test cases
- disable TAPI functional tests in tox

JIRA: TRNSPRTPCE-341
Signed-off-by: Gilles Thouenon <gilles.thouenon@orange.com>
Co-authored-by: Christophe Betoule <christophe.betoule@orange.com>
Change-Id: I38904051cc3e183eda2586de7a104e46d56e39c8