Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [fuel] verify: Rework condition for using sudo

    With the rework of Fuel & Armband repos, the condition for using sudo
    got mixed up and alternated between on/off for armband's deploy/verify
    jobs. Rewrite it based on lab allocation instead of project.

    Change-Id: I428c585142017b170233858ec3160fdaf998db0c
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 521e788..d7904fd 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 521e7886bc8d734e0592035acbd562d59e811c65
+Subproject commit d7904fd52767f31d3d8b087bdedc94bd4b0cf3bf