Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "lib.sh: persistent cfg01, mas01 mcpcontrol"
  - lib.sh: persistent cfg01, mas01 mcpcontrol

    cfg01, mas01 DHCP leases in mcpcontrol virtual network should be
    persistent (if cfg01 IP changes, minions can't find Salt Master).

    Change-Id: I497207ebe1537af94fd92de12491664d17ad3144
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index a6bc08b..a9fbe3c 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit a6bc08b2be51b069b629d357a44cfa5979f09c2a
+Subproject commit a9fbe3c47a680eded71680a4ee3b77b5e82af3c6