Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[noha] ctl01: Enable jumbo frames"
  - [noha] ctl01: Enable jumbo frames

    Now that host vnet MTU has been bumped to 9000, we can safely enable
    jumbo frames in ctl01 VM without breaking nova compute discovery.

    JIRA: FUEL-336

    Change-Id: I30bf333c18f3f0de2ce37fc7ae99df9b99f3a5e9
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 1fdebcf..bba197c 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 1fdebcfffbf247ad972aa4f25272927e9e7c66e2
+Subproject commit bba197c75ad98018e1dec388e6b27217982f154c