Update git submodules

* Update docs/submodules/vnfrqts/requirements.git from branch 'master'
  to 6a8bd3dc6a40cd9dfa2203fed3d56e74ba28b891
  - Correction of requirement R-73468
    
    Issue-ID: VNFRQTS-831
    
    Signed-off-by: JunfengWang <junfeng.a.wang@ericsson.com>
    Change-Id: I44efa4034896f265eb59fc663f1b389198a3b5e0
    
1 file changed