Update git submodules

Update git submodules

* Update docs/submodules/portal.git from branch 'master'
  to f71707238ebabd9911277af55673b1d42ac1495f
  - Merge "Sonar fix in ecomp-portal-BE-common"
  - Sonar fix in ecomp-portal-BE-common

    Override "equals(Object obj)" to comply with the contract of the "compareTo(T o)" method
    Make "auditTrail" transient or serializable
    Reduce the number of conditional operators (4) used in the expression (maximum allowed 3)

    Issue-ID: PORTAL-562
    Change-Id: Ic867eca2d2f57d68bbc902f27bf0eb9753aeeaa1
    Signed-off-by: Parshad Patel <pars.patel@samsung.com>