Update git submodules

Update git submodules

* Update docs/submodules/externalapi/nbi.git from branch 'master'
  to 64d083dcd86fa0b0c90440647df7c900993d523f
  - Merge "Update SO request to use GR_API instead of VNF_API"
  - Update SO request to use GR_API instead of VNF_API

    - add GR_API to so request
    - request to AAI to retrieve cloud owner id
    -add status "inprogress" after check

    Issue-ID: EXTAPI-337
    Signed-off-by: romaingimbert <romain.gimbert@orange.com>
    Change-Id: I34911a3c785aac24f5feb71fede36a142f8fcffe