Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [maas] artifact sync: improve barrier condition

    Simplify wait condition for MaaS service up, since it's fragile
    and often adds extra time when not really needed.
    Instead, retry starting boot image import right away.

    Change-Id: I131d6c82127449cecf6685d4cc7484a366e658c6
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 22fbf08..fedeebd 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 22fbf083c762c56efcf6ba40e6e4cc5643da3e4e
+Subproject commit fedeebd6ee0e3a342777812b7ea90bd4988787ad