Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 28a0ce73a022a5ccecadae6b3172beb15e3f46ab
  - Merge "Updated closing gateway to be inclusive instead."
  - Updated closing gateway to be inclusive instead.
    
    Updated closing gateway to be inclusive instead.
    
    Change-Id: If877bf71b406d00f7a0e277b88f9e3064e642be0
    Issue-ID: SO-1868
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>
    
1 file changed