Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Make OSA playbook to use during installation configurable"
  - xci: Make OSA playbook to use during installation configurable

    Change-Id: Ie6f079bb61905ca0458778b78fef799777b24efa
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index be291c9..7ec35d4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit be291c9109c9e2e8d50db56dc8bb26373b0f51e6
+Subproject commit 7ec35d47f4130e06f9ce3b577eb5b1961a166b2c