Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  to bfc54b0a88126c51b667fcd83d56233009c5d07e
  - Add Functest Networking SFC tests

    Add in the Dovetail project the networking-sfc tests
    which are part of Functest project (functest-smoke container).

    Signed-off-by: Panagiotis Karalis <panos.pkaralis@gmail.com>
    Change-Id: Id57d00e62000e47303f1678347acc3a5fda6dec7

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 242529f..bfc54b0 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 242529fbb3a3b6cbbd5283b9ef1ddba6ae3ae34b
+Subproject commit bfc54b0a88126c51b667fcd83d56233009c5d07e