Update git submodules

* Update docs/submodules/multicloud/k8s.git from branch 'master'
  to bc6c2db66326040062fca588ea5a23e963b3b784
  - Merge "Add Controller Register API to Orchestrator"
  - Add Controller Register API to Orchestrator

    Add API allows Controllers to register
    themselves as gRPC servers consumed by
    the orchestrator.

    Issue-ID: MULTICLOUD-995
    Signed-off-by: Marcus G K Williams <marcus.williams@intel.com>
    Change-Id: I75946a4af711bf2e9d65f354923db494da667e70

diff --git a/docs/submodules/multicloud/k8s.git b/docs/submodules/multicloud/k8s.git
index 219a7ea..bc6c2db 160000 (submodule)
--- a/docs/submodules/multicloud/k8s.git
+++ b/docs/submodules/multicloud/k8s.git
@@ -1 +1 @@
-Subproject commit 219a7eab4129b3e500bcaf6c62819011580895ba
+Subproject commit bc6c2db66326040062fca588ea5a23e963b3b784