Add node-info in portmapping structure

Add node-info in portmapping structure

- change structure of portmapping.yang to put general node info in a
new node-info container that serves to create node in different
network layers (openroadm-cli, openroadm-network, openroadm-topology)
without multiple readings inside device
- adapt code to the new portmapping structure (especially, to get the
node-version)
- remove MappingUtils from PortMappingImpl, olm and renderer unitary
tests
- remove opeenRoadmTopology121 implementation since there is no longer
any device transaction needed to built node/link in openroadm-topology
(only from portMapping)
- disable some renderer UT

JIRA: TRNSPRTPCE-109

Change-Id: Ifa475029c73cb0690ea18d9903b9dead5f0d57f1
Signed-off-by: Gilles Thouenon <gilles.thouenon@orange.com>
Co-authored-by: Christophe Betoule <christophe.betoule@orange.com>