Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[armband] Add stable/fraser branch"
  - [armband] Add stable/fraser branch

    Change-Id: I619dfb48fb0cfca1b8b3a315760bb684de720f7c
    Signed-off-by: Delia Popescu <delia.popescu@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f0d9e67..b04a29d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f0d9e677aa0710f4fbf525f92791eb4e7ceb37dc
+Subproject commit b04a29d3eef0404ecc90b6d8be6dc621a91b9cf0