Update git submodules

* Update docs/submodules/releng from branch 'master'
  to feebb3d6fb57f7bd9856a593bb638febdb2992ac
  - Revert "update global-jjb to latest version"

    This reverts commit 1ca7b55423fe27db97ee626f621bd5d996cb3506.

    Change-Id: I60af8017e88659d0dc7f7d77a3f82b3d8a077f7d
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e3e6e3a..feebb3d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e3e6e3a5e00484299e508b4fd34ff03095d56b75
+Subproject commit feebb3d6fb57f7bd9856a593bb638febdb2992ac