Update git submodules

* Update docs/submodules/msb/swagger-sdk.git from branch 'master'
  to 617f07b4e70b297de558b4e62ed58acc6cf706a1
  - Update spring core
    
    Change-Id: Ia27fc773fba3cd10c335fde566c44235ee341eb3
    Issue-ID: MSB-329
    Signed-off-by: Huabing Zhao <zhaohuabing@gmail.com>
    
1 file changed