Update git submodules

* Update docs/submodules/msb/apigateway.git from branch 'master'
  to f196094635a5690c631529b2363e3de1058eb6e7
  - Merge "E release note"
  - E release note
    
    Issue-ID: MSB-356
    Signed-off-by: Huabing Zhao <zhao.huabing@zte.com.cn>
    Change-Id: Ib4614f9090cd47b373314fdf4d0a16c65c4cab94
    
1 file changed