Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Enable Functest Healthcheck for Kubernetes scenarios"
  - xci: Enable Functest Healthcheck for Kubernetes scenarios

    This change enables Functest for kubernetes scenarios but any change
    that impacts kubernetes scenarios will fail and block the change from
    merging until the prepare-functest playbook and role are fixed in
    releng-xci.

    Change-Id: I046e3a0fb9a211cf9d629899017922288d466b0c
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 88f66aa..79e542d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 88f66aa2aa1d04eaa28b9f99b2b2aa9454ce031e
+Subproject commit 79e542dffae23546da42ff35ad5219578259392b