Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to b491e6c3e97f81487d9f70e31b4e1159fe7aa9e8
  - openecomp-be code coverage increase
    
    Add tests for classes in openecomp.core.model.types package
    
    Change-Id: I1c8044b2c8d422468dba610b2012e1cb34a75835
    Issue-ID: SDC-2326
    Signed-off-by: Piotr Darosz <piotr.darosz@nokia.com>
    
1 file changed