Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to ec83b3d3bda5501b20e05efae198202b29396c4a
  - Merge "Revert "Update Vagrant VM Version""
  - Revert "Update Vagrant VM Version"

    This reverts commit f802b87c1d3caecc74789d435358d4f8ff2555a3.

    Reason for revert: Will rebuild with Nameserver issue solved

    Issue-ID: MULTICLOUD-1004
    Change-Id: Ieafee94e4fe909c30ef8a4167d242f40e114d767
    Signed-off-by: Yao Le <le.yao@intel.com>

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index 000e836..ec83b3d 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit 000e8365682ada294687a2c45adc34979cdb093d
+Subproject commit ec83b3d3bda5501b20e05efae198202b29396c4a