Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 5ececa1257c70420d398a903db267e14b14b3a6a
  - Merge "Replace collections.size with isEmpty for better performance"
  - Replace collections.size with isEmpty for better performance
    
    Replace collections.size with isEmpty for better performance asdc-controller
    
    Issue-ID: SO-2187
    
    Signed-off-by: sindhu3672 <arcot.sindhuri@huawei.com>
    Change-Id: Ie8adc3a149a583fe66c771ee70ae95055a229f83
    
1 file changed