Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "reclass: maas: Dynamic machine definitions"
  - reclass: maas: Dynamic machine definitions

    Refactor maas machine definition flow from going through variables
    in pod_config.yaml to directly handling it in Fuel using a new j2
    template.
    This prepares for future improvements allowing a dynamic compute
    node count, as well as parameterizing new values via j2.

    For now, node roles and count are still statically mapped to PDF
    nodes.

    JIRA: FUEL-319

    Change-Id: I770d82987fcb99792f9d5bc0857ab513f5cd3731
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 4e54382..3099303 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 4e54382989138155100a5cae90d70ca162dab703
+Subproject commit 30993030ea4b5a35ab4ae9d0aeb6be85c1e259c3