Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to bb56dd69512406f8d8bb709b8c84e7d09b4a239c
  - Merge "Define constant in place of repeated literals."
  - Define constant in place of repeated literals.
    
    Defined a constant instead of repeatedly using literals.
    
    Issue-ID: SO-1490
    
    Change-Id: I4fc4eddeebf42436d6198ba92d7c8bfa8f3394b0
    Signed-off-by: h00397475 <hena.choudhury@huawei.com>
    
1 file changed