Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to 7830bf49fbdcf1b726dc8dc3aca3638fb2195e66
  - Merge "Remove -a build flag"
  - Remove -a build flag

    -a forces rebuilding of packages
    that are already up-to-date. This is
    slowing down builds to several minutes

    Change-Id: Iac082538b91e60b23dc1a2f3b1f1597e078d7a4a
    Signed-off-by: Ritu Sood <ritu.sood@intel.com>
    Issue-ID: MULTICLOUD-301

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index 57ba151..7830bf4 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit 57ba15140f909434bd309a447c53eb6db4147f8f
+Subproject commit 7830bf49fbdcf1b726dc8dc3aca3638fb2195e66