Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "virtual: Add infra/init.yml for each scenario"
  - virtual: Add infra/init.yml for each scenario

    Align our reclass model for virtual PODs with baremetal, by adding
    an infra init file for each scenario, setting up cluster_name via
    scenario infra init instead of scenario init.
    While at it, reduce redundancy by defining cluster_domain based on
    cluster_name via common infra init.

    JIRA: FUEL-310

    Change-Id: I5e89c883853fa66cb1c1fc69ce5766ee136ac477
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 2050647..f8898b4 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 2050647bd70043be2eb90a45b7173a25570b8c8d
+Subproject commit f8898b437e3ff5e8c64ff17441377f4cbe1a7a33