Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to 77ce224e1b3736f0c0b398b5a5b57ea58ebbaa55
  - Merge "Remove ovn4nfvk8s network plugin"
  - Remove ovn4nfvk8s network plugin

    As ovn4nfv networks are now handled on k8s side by created CRD, this
    plugin is no longer necessary. Removed all references to ovn

    Issue-ID: MULTICLOUD-733
    Signed-off-by: Konrad Bańka <k.banka@samsung.com>
    Change-Id: I7ad6c6d9b3b4fd8f249796f437e69c7df4e701cc

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index ffa9e22..77ce224 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit ffa9e22fe906c805928d952bb6e60d5ece86f77d
+Subproject commit 77ce224e1b3736f0c0b398b5a5b57ea58ebbaa55