Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Rewrite infra deployment scripts

    * bring in scenario files
    * shift infra code into functions

    Change-Id: I650a26d03d842c3afcc7fcb97b84ef4826827a38
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 3fb5e54..e49e91d 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 3fb5e5454045860463a92c18d4d859967002e6fb
+Subproject commit e49e91d7aa740437c01e6531ef648d2dae97c11d