Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 17fe07c8056ca9e8ebf24957fedfe4f1c3784769
  - Merge "Update jjb for Alpine 3.13"
  - Update jjb for Alpine 3.13

    Change-Id: Ie43dd6f101ad7972e6c078eda76b123d7b2f5c54
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index afa1f8e..17fe07c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit afa1f8ea36ba2eb1e96c512f6d27a52af441f055
+Subproject commit 17fe07c8056ca9e8ebf24957fedfe4f1c3784769