Update git submodules

* Update docs/submodules/multisite from branch 'master'
  - Merge "Use the latest Kingbird release"
  - Use the latest Kingbird release

    Change-Id: Ie18e1989ca93915674a085c5ba428ca83503f4ba
    Signed-off-by: Dimitri Mazmanov <dimitri.mazmanov@ericsson.com>

diff --git a/docs/submodules/multisite b/docs/submodules/multisite
index 8b4eeb5..8e1c3b9 160000 (submodule)
--- a/docs/submodules/multisite
+++ b/docs/submodules/multisite
@@ -1 +1 @@
-Subproject commit 8b4eeb538124f5eedd932caa55bd72fcd6189e81
+Subproject commit 8e1c3b912289ce6d7af51a52a90b05b8a95f82bb