Update git submodules

* Update docs/submodules/externalapi/nbi.git from branch 'master'
  to 3368de8d350fc0b00d94cc38bcbcdbacbf80b516
  - Merge "Update Service Order swagger for E2E Network Slicing use case"
  - Update Service Order swagger for E2E Network Slicing use case
    
    Issue-ID: EXTAPI-381
    
    Change-Id: Ia96e26c850688ea5129e1f03b854594ba8e15f93
    Signed-off-by: dhebeha <dhebeha.mj71@wipro.com>
    
1 file changed