Update git submodules

* Update docs/submodules/vnfsdk/model.git from branch 'master'
  to 6ed1771f1929f4515b1abfc965daeff7d1f1e9b4
  - Automation adds vnfsdk-model-offeredapis.rst
    
    Issue-ID: CIMAN-376
    
    Change-Id: Icacf397b5ce653cd92c67ee24d08acb8c9a5351f
    Signed-off-by: lf-jobbuilder <releng+lf-jobbuilder@linuxfoundation.org>
    
1 file changed