Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 3ec71c0b73eda99d3ed3ddcddbb9d5619415b6fd
  - Updating etsi catalog endpoint param name
    
    Change-Id: I445fd4572dc5a876fdeee66ae393a1215fce54d0
    Issue-ID: SO-2415
    Signed-off-by: waqas.ikram <waqas.ikram@est.tech>
    
1 file changed