Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [ha] Bring in gnocchi/panko services

    JIRA: FUEL-372
    Change-Id: I9083898f0179649d855750d48f3f9bc79caba50c
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index a021366..3663d63 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit a021366c0934d74889ac7d64e0857e35bdd0319c
+Subproject commit 3663d63fdd1d85a02e2b428820861ac2b194129c