Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to b946de8336944c803ed9c23bd606343fe149e062
  - Add relationship between BBS resource and Service
    
    Issue-ID: SDNC-783
    
    Signed-off-by: Victor Gao <victor.gao@huawei.com>
    Change-Id: I3ce8c75a44301bfaeec288ec482e22e9f4fad6e1
    
1 file changed