Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c9296dc7147f22ed636f928f6c38ad099e3ed398
  - Merge "Added ETSI Delete VNF BB"
  - Added ETSI Delete VNF BB
    
    Change-Id: Ie82734f25468b75d9b4ab3096639a9afdf6fe2c1
    Issue-ID: SO-1632
    Signed-off-by: Lathish <lathishbabu.ganesan@est.tech>
    
1 file changed