Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "ci/deploy.sh, states: bash debug, continue on err"
  - ci/deploy.sh, states: bash debug, continue on err

    Since we don't `set -e` in state files, applying each state will
    always succeed unless the last instruction in the state fails.
    Make this uniform by always succeeding in applying the state.

    While at it, enable bash debugging logs, for better readability
    of deploy log files.

    Change-Id: I3cf4886f6d73c6fd1380df1a4e1413334bec1701
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 00bf737..599a570 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 00bf737316a29867a1fcc38753418d6e2fff9f27
+Subproject commit 599a570c55aab972aed0b98998e9b85c54a88408