Update git submodules

* Update docs/submodules/externalapi/nbi.git from branch 'master'
  to bce9428824803a9f2b03975c7238e52974ec31b2
  - Update documentation with info on EXTAPI-249
    
    Change-Id: If12911e2cab641cde9de0eb7f9615286d1e97ae9
    Issue-ID: EXTAPI-253
    Signed-off-by: MatthieuGeerebaert <matthieu.geerebaert@orange.com>
    
1 file changed