Update git submodules

* Update docs/submodules/modeling/etsicatalog.git from branch 'master'
  to 2f4d7a5b1d2a629e5856a5e3e17576bc618452f0
  - Implement read VNFD API
    
    Issue-ID: MODELING-266
    Change-Id: Ib5e4a965c080329f68d407b414a347298da6a84b
    Signed-off-by: dyh <dengyuanhong@chinamobile.com>
    
1 file changed