Update git submodules

* Update docs/submodules/releng from branch 'master'
  - xci: Clone releng-xci repo for phase jobs as well

    Forgotten to fix phase jobs.

    Change-Id: I50c525089d6d3b4f28650ad78b8810817aaf150e
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3ea5c44..bf5f869 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3ea5c44e46f91724e1c351a02050bf4e858f1a51
+Subproject commit bf5f869a57d97b32ff72b252a397cf686e376979