Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [baremetal] Fix ocata reference

    Previous cherry-pick failed to rename 'ocata' to 'pike'.

    JIRA: FUEL-317

    Change-Id: Ic1a1145e0652f2a7d15980399232631cf3fc5080
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 9308f98..bb3b696 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 9308f98d759e4f934b4fa11533e4cec6da36cd3c
+Subproject commit bb3b6968dbccb74959d394fb6426ba5b8fb2c5e3