Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to 42efc317925a12c22aa87ec715df61d339bd9347
  - Merge "Add readme.md for database shim layer"
  - Add readme.md for database shim layer
    
    Add some documentation related to how the mongo backend is
    implemented
    
    Issue-ID: MULTICLOUD-666
    Change-Id: I9dae429b1da004fbaa7ea694e6e58fa2d337a042
    Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>
    
1 file changed