Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [fuel] verify: Use regex find instead of match

    ==~ and its negative form previously used mean the pattern should
    match the whole string, while =~ returns true for partial matches.

    Change-Id: Ibdeacb4bc221820175b15a87db343fc950e0f9e8
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0e4c022..b38b0df 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0e4c022e3214ca9a0a5a306619c2b26c55367248
+Subproject commit b38b0dfaf377eaa4dcfa4a6504335e524ee9b1cb