Update git submodules

* Update docs/submodules/msb/swagger-sdk.git from branch 'master'
  to 51ff02911fbdd070061aa97c22de79dc87d2c487
  - Generate coverage data for sonar cloud
    
    Issue-ID: MSB-451
    Signed-off-by: Huabing Zhao <zhao.huabing@zte.com.cn>
    Change-Id: I2b4e77bce05d8d8e2b4921c90d471257f8d30c9e
    
1 file changed