Update git submodules

Update git submodules

* Update docs/submodules/vnfrqts/requirements.git from branch 'master'
  to f577b145e2aa175a984a4ecb14585748a49a651a
  - Merge "Relax camel casing requirements in VES"
  - Relax camel casing requirements in VES

    In 7.1, the VES spec added requirements that
    made it mandatory for event names and
    other fields to camel case the values
    of those fields. This had the negative
    side-effect of requiring vendor and
    operator updates for existing VES
    events and their associated processing.

    To avoid this, the requirements have been
    updated from must requirements to should

    Issue-ID: VNFRQTS-869
    Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>
    Change-Id: I8669e08f7c4cd2df44239ca2fa49421e011f2e1d