Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 353782a4d50f3764f71916385dc062401aa7456d
  - Merge "Removed logXXX() methods from MsoUtils"
  - Removed logXXX() methods from MsoUtils

    Following methods has been removed from MsoUtils (.groovy) class:
    logContext(requestId, serviceInstanceId)
    logMetrics(elapsedTime, logtxt)
    logAudit(logtxt)
    as no longer required.

    Remaining uses of them in other groovy clases has been deleted/replaced by
    apropriate use of logback.

    Change-Id: I473f01b65c67e90667311cff3b2a671e719f7258
    Issue-ID: LOG-631
    Signed-off-by: Witold Ficio Kopel <w.kopel@samsung.com>