Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fill stable branch details"
  - Fill stable branch details

    Change-Id: I135189c6fa8fbf01f67f37547ca120779c08fbc9
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6856a6d..d01e4c5 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6856a6d362b69d3674092ec36b1061e8f19abea6
+Subproject commit d01e4c56ce1bb8944ec8314670389ffbc4bc8bbc