Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 79d1e0244ce1f01f76640491dd6fca23420212cd
  - Merge "Fix PNF software upgrade workflow"
  - Fix PNF software upgrade workflow
    
    Fix the issue that API can not return when the workflow has ended.
    
    Issue-ID: SO-2751
    Signed-off-by: Enbo Wang <wangenbo@huawei.com>
    Change-Id: I7d140b2286ce3003a6efcd2c3891fc8142982477
    
1 file changed