TAPI connectivity upgrade

TAPI connectivity upgrade

- Implementation of WDM 100GBE service in T-API
  as an ETH service
- Implementation of OTN services for Mxpdr &
  Swtchpdr use cases
- Differentiation between XPDR type with new
  value in TAPI node Name attribute
- Upgrade connection list of connectivity service
  to include only TOP connections. Cross connections
  should be referenced inside the Top Connection in the
  lower connection list attribute
- Create switching pool in TAPI node for Tpdr node which
  reflects the NETWORK to CLIENT port connection map
- Adapt tests

JIRA: TRNSPRTPCE-577
Signed-off-by: errea <errea@eurecom.fr>
Change-Id: I39ef19626285f3131dc997a056de64c799ff26c3