Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - Merge "Pod Descriptor File compatible reclass structure" into stable/euphrates
  - Pod Descriptor File compatible reclass structure

    Implementation for baremetal-mcp-ocata-ovs-ha scenario

    JIRA: FUEL-275

    Change-Id: Id6ab5697f993ac9faa019c3c10ba4ed4b7b6db01
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>
    (cherry picked from commit 5c0a09fbd0f377df56bfcfe94b262225a34f98ff)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 6205a5c..39a14d6 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 6205a5cf55ba25a9a632ba8db930e1e0ab07b781
+Subproject commit 39a14d6697d0c66d9ce412a9e1fca7c465625acb