Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 592366c73cdd32c387768678cfadc9297808844a
  - Credential addition in NSSMF adapter
    
    Bug fix
    
    Change-Id: Iae0eb5748190449ddcc441d77a3a9529783a4b00
    Issue-ID: SO-2775
    Signed-off-by: jananib <janani.b@huawei.com>
    
1 file changed