Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [noha] Rectify opendaylight+dpdk scenario

    Change-Id: Ie707de90617e7080a5eb87cad69a604cf5e0f9fc
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 32faafc..26f6c1b 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 32faafc317169dfe2216995bf4a2afd330749545
+Subproject commit 26f6c1b15bb2bf83695746768624a36cc092187b