Update git submodules

* Update docs/submodules/sdnc/oam.git from branch 'master'
  to 72312368696418d022cfa12d35f01f4c55d4ed66
  - Merge "Add trunk_network_indicator to NETWORK_MODEL tbl"
  - Add trunk_network_indicator to NETWORK_MODEL tbl
    
    Change-Id: Ieddd6b82f774b91d00f6daacf2d1d80fb570f81a
    Issue-ID: SDNC-684
    Signed-off-by: Yang Xu <yang.xu3@huawei.com>
    
1 file changed