Update git submodules

* Update docs/submodules/releng from branch 'master'
  to abc271b823967f776a67f8132cdb8d07c8fbb567
  - Fix tag regex

    Change-Id: If2ce41ef2e6be3e8c4a2a7630feaa9d5089c471f
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e66323f..abc271b 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e66323f1e715f62820b8d8ad1f917bebacf7c896
+Subproject commit abc271b823967f776a67f8132cdb8d07c8fbb567