Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 154ffe78cb3ff4b396fe327be5cbe9fcc14e12ad
  - Exclude arm tags from gate jobs

    Change-Id: I0842a5bfe4a1e12c08bc2c8481bf6300097eca9b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index bba9fa3..154ffe7 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit bba9fa36bb75a0eb1ec4e4f184881935e9e75c0f
+Subproject commit 154ffe78cb3ff4b396fe327be5cbe9fcc14e12ad