Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[patch] MaaS: mcp.rsa.pub to auth keys via pillar"
  - [patch] MaaS: mcp.rsa.pub to auth keys via pillar

    Drop one questionable patch responsible for MaaS node authorized
    keys to include mcp.rsa.pub by reading the contents of authorized
    keys on mas01, assuming mcp.rsa.pub will be on the first line.

    Instead, export the contents of the public key using a shell env
    var during deploy, which gets expanded via maas_pdf j2 template
    into a reclass param, leveraging existing salt-formula-maas sshprefs
    mechanism for delivering the key to MaaS.

    Since we require the public key to exist before expanding templates,
    move `generate_ssh_key` call outside the current infrastructure
    handling block, allowing it to execute during all `deploy.sh` calls,
    even for dry-runs.

    Change-Id: I0f53b0f764a2fafd292e0ffd399c284acf61bd30
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 3099303..0083925 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 30993030ea4b5a35ab4ae9d0aeb6be85c1e259c3
+Subproject commit 00839253ec6cc31fdabe7cacdc23b9ffadfb2bba