Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Update SNAPs usage of library"
  - Update SNAPs usage of library

    JIRA:SFC-120

    Snaps updated two methods which now require more parameters:

    https://github.com/opnfv/snaps/blob/master/snaps/openstack/utils/heat_utils.py#L260
    https://github.com/opnfv/snaps/blob/master/snaps/openstack/create_instance.py#L781

    Change-Id: I164c51298afd7b80ee88312f3a09abe7f09282a0
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 607dc8e..cde9c60 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 607dc8efc9c29bca257089c94226c1ff9b079a1f
+Subproject commit cde9c60e0bcb6ba141ce50d913dc138bfca3493d