Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[baremetal] ODL: Move ODL VCP VM to kvm02"
  - [baremetal] ODL: Move ODL VCP VM to kvm02

    Balance VM distribution on the 3 kvm nodes, as kvm02 has 4 VCP VMs
    while kvm{01,03} have 5 VCP VMs each (without ODL).
    Instead of spawning the ODL VCP VM on kvm03, move it to kvm02.

    Change-Id: Id03b9453ee7c15cd6785c0bc073a38b87034aede
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 84f131b..215a567 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 84f131b32ac510097c3aac321fb1ca67bafc8941
+Subproject commit 215a567501812b1d950aa4b42f51091ecee50415