Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to 644c005d9f434ec5400e8f74b7456dfc419f74b0
  - Merge "Adding Helm charts of MetalLB"
  - Adding Helm charts of MetalLB
    
    MetalLB is the loadbalancer for Kubernetes
    
    Issue-ID: MULTICLOUD-747
    Signed-off-by: Pramod <pramod.raghavendra.jayathirth@intel.com>
    Change-Id: Ic07877234f9b0f80cb636f7b4e3c265b8be8a945
    
1 file changed