Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Increase verify jobs timeout

    Verify durations have mostly been doubled without changes in Functest.
    Increasing the timeout allows bypassing the releng issues and falsy
    -1.

    Change-Id: I8e6244f358f18705716cf379f4ddfe8d6014a578
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9a1c41d..015b7ca 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9a1c41df27fe5b96330001071c3c05e17272d03b
+Subproject commit 015b7ca4dd3aa455de0e00c845fe1f04b16852b6