Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to c898a84208d20f0040778450cc401a35c3f8ee41
  - Merge "Mongo api changes"
  - Mongo api changes

    Add RemoveTag call to allow removal of attribute from
    a mongo document.
    Allow find to return and empty list.

    Issue-ID: MULTICLOUD-1029
    Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
    Change-Id: I315efb8a4da485b697727254ccc9a5828f11a0d0

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index 4ae60c1..c898a84 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit 4ae60c1b50750587ab9d3960617a47d7db57b311
+Subproject commit c898a84208d20f0040778450cc401a35c3f8ee41