Update git submodules

Update git submodules

* Update docs/submodules/vnfrqts/requirements.git from branch 'master'
  to 563598a085d5e70dfc2922d283a2c5916a0544ce
  - Splitting NF reqt from VES spec

    - Moved content in VES Event Listener spec that was specific
      to defining NF behavior to Monitoring requirements
    - Expanded requirements regarding protocol selection
    - Provided additional guidance for VES client configuration
    - Reorganized sections of Event Listener for a more logical flow
    - Fixed various small formatting issues in VES 7.2 spec

    Issue-ID: VNFRQTS-813
    Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>
    Change-Id: I4ca6fa4d846465c90520f8ebb133a1301d3509cf
    Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>