Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 458cc8d407f27bc360f9d7c93164bae6b764947f
  - add vnfcInstanceGroup sequence
    Issue-ID: SO-1393
    
    Change-Id: Ife3b71dcfa543a693564779da44800f1dd8486e9
    Signed-off-by: zm330 <zhangminyj@chinamobile.com>
    
1 file changed