Update connection and interface name

Update connection and interface name

As now we allocate frequencies instead of wavelength, change connection
and interface format name by replacing wavelength reference by lower
spectral slot number and higher spectral slot number.
For example: SRG1-PP1-TXRX-DEG1-TTP-TXRX-1 becomes
SRG1-PP1-TXRX-DEG1-TTP-TXRX-761:768
XPDR1-NETWORK1-1 becomes XPDR1-NETWORK1-761:768
- add lower and higher spectral slot number in signature methods of
crossconnect, olm, ModelMappinUtils, openroadminterface,
openroadmfactory
- add some log info
- update ServicePathInput and ServicePowerSetup in MappingUtils with
frequencies, spectral slot number and modulation format
- add new map to get slot width from service rate and modulation format
in GridConstant
- add methods in GridUtils to get lower and higher spectal slot number
from frequency
- update unit tests to take into account the new format name
- update functional tests to take into account the new format name

JIRA: TRNSPRTPCE-230
Signed-off-by: manuedelf <emmanuelle.delfour@orange.com>
Change-Id: I98f62491f2720a84d4fdc8bd189b0a123ab5f0cf