bug fixes in Portmapping 7.1.0

- remove some useless namespaces inside java code
- in createMcCapDegreeObject and createMcCapSrgObject methods
  * add a null testing to avoid NPE
  * fix default treatment when McCapabilityProfileName is null or empty
- remove treatments on supported-interface-capability
  since this attribute is no more present in OpenROADM 7.1.0 ports.

JIRA: TRNSPRTPCE-337
Co-authored-by: guillaume.lambert <guillaume.lambert@orange.com>
Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>
Change-Id: Ifdd3d07b88220f5f505be37286e21ca00fb09457