Update git submodules

* Update docs/submodules/releng from branch 'master'
  to a0ce773fa8693c53ffb303c9241fd5f2c2592f1e
  - Merge "Revert "Run one single ims at glance""
  - Revert "Run one single ims at glance"

    This reverts commit b5e9c78df69487adcf1e48cffe1d0034fffc688e.

    Change-Id: I39de9ef6c2690c04a790c8c05adeb96c2f939569
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 979e8ac..a0ce773 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 979e8ac6ac7acf78730a2eee199e0e8f78a316e1
+Subproject commit a0ce773fa8693c53ffb303c9241fd5f2c2592f1e