Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [ha] Retry salt.minion state apply

    Baremental compute nodes time out with 'Not connected' or
    'No response' while trying to apply `salt.minion` highstate after
    the Salt 2017.7 bump, retry applying it up to 5 times.

    Change-Id: I67f74c65a7cebe0a0b4c2812fa0ced6c1144be58
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 327cf3f..0f47952 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 327cf3fb6a1c5745fa9666d4e2762ee1e4eac853
+Subproject commit 0f4795273910ebdccbcbc602bd749093bcd51e9b