Update git submodules

* Update docs/submodules/sdc/sdc-workflow-designer.git from branch 'master'
  to 1cf6048481087ace4c495f255671ad9e6b78db1b
  - Cassandra 3 Upgrade
    
    Move workflow to use SDC cassandra 3
    Issue-ID: SDC-2595
    
    Signed-off-by: shrek2000 <oren.kleks@amdocs.com>
    Change-Id: I3e0a47c514525e684cf291269a35b9511920eec6
    
1 file changed