Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 86bac35dfead00265a18944528b635a16ab96263
  - Merge "Solve the vnfc_instance_group_customization_id insertion failure problem"
  - Solve the vnfc_instance_group_customization_id insertion failure problem
    
    Change-Id: Iac9eea25895d9f048b00218b67db5d7bfb3efb58
    Issue-ID: SO-2164
    Signed-off-by: zm330 <zhangminyj@chinamobile.com>
    
1 file changed