Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[baremetal] Fix DPDK by running linux.system first"
  - [baremetal] Fix DPDK by running linux.system first

    DPDK scenario requires hugepages to be set up and enabled before
    configuring OVS ports, so apply `linux.system` on compute nodes
    and reboot them before attempting to run `linux.network` state.

    Change-Id: I2b685361b07727a4740a3676c5f219a6443d1cf2
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 30c3ae2..7a1337a 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 30c3ae2ed15004ae013c56980138a1678d83922d
+Subproject commit 7a1337aeaee3e34ae5c21bb2e9798232f3b2ca28