Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 767d75c00de86e1040c9dede18cf9778990ed5bf
  - fix sonar issue

    fix sonar issues

    Issue-ID: SO-1811
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: I137e40866ccbfb634b430ea56028fac87cc6b2bc

  - fix sonar issue

    fix sonar issues

    Issue-ID: SO-1811
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: Ia0bb25c9fc10364fddde10d38675540d0c539227

  - fix sonar issue

    fix sonar issues

    Issue-ID: SO-1811
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: I79db093a27165fd5d54dfab1c1d25749bf6df533

  - fix sonar issue

    fix sonar issues

    Issue-ID: SO-1811
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: Iba1f585de7465da5649b60e6990a737936656ac7