Update git submodules

Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to ffa9e22fe906c805928d952bb6e60d5ece86f77d
  - Merge "Add a namegenerator package"
  - Add a namegenerator package

    Adds a namegenerator package which generates
    readable names for instances.
    This will go with a small change in the API
    where we expect instance names and will generate
    the names if they are not provided.

    Issue-ID: MULTICLOUD-716
    Change-Id: I69d8b7fb62667b8b60f3e02eb26dc937961d26d2
    Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>