Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Adapt the vim-config to new tacker"
  - Adapt the vim-config to new tacker

    Tacker is changing the config and adds cert_verify

    Change-Id: Ia99bf2ad4ea0d6986ecd523bbe76e0e2b4a8a0ce
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 921d1b0..74a36db 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 921d1b0ce2a9b20ad567251980e536fa6f68c139
+Subproject commit 74a36db25f6fe2b62b41846f27fbf929d270afe5