Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to f3c09ea952108a5bf9b0bc143ffeee2a1bf73fd3
  - Reverting vagrant images back to 16.04 VM deployment

    Currently we face issue with VM based deployment causing
    vagrant up to fail and quit abruptly.

    Signed-off-by: Akhila Kishore <akhila.kishore@intel.com>
    Issue-ID: MULTICLOUD-974
    Change-Id: I9a9e28357f1f56d17643d8f2a31f4cdca70fb456

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index 42efc31..f3c09ea 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit 42efc317925a12c22aa87ec715df61d339bd9347
+Subproject commit f3c09ea952108a5bf9b0bc143ffeee2a1bf73fd3