Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 55271a1679d0b070a090692af1c970872407b66f
  - Merge "update the release docs"
  - update the release docs
    
    Issue-ID: SO-2821
    
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>
    Change-Id: Ib2f85baf37c58f00f2dccc87e65ca119c64c0928
    
1 file changed