Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - patches: linux.storage.lvm: Disable filter

    JIRA: FUEL-304

    Change-Id: I52ae89f933f976b678b27f79e2ad67c3699ef8ec
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit d7927a5e63e5314c2a81970150b849b0b9d0bd49)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index ee21bd7..322884c 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit ee21bd791dd74558254f2b4aaef15504c9d395ea
+Subproject commit 322884cd6007db93ef69ac0faeaefec9f32c010c