Update git submodules

* Update docs/submodules/releng from branch 'master'
  - bug fix: score calculation based on build_tag

    we were used to count the number of PASS of the last 4 runs
    it works 80% of the cases

    4 runs
    4 OK => 3 points
    3 OK => 3 points
    2 OK => 2 points
    1 OK => 1 point
    0 => 0

    it is different from the normal score calculation
    4 OK => 3 points
    3 OK => 2 points
    2 OK => 2 points
    1 OK => 1 point
    0 => 0

    Change-Id: Ib8df2c294e0036246176c181b7a7ac290ebea07e
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 74c48b1..ca745db 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 74c48b14d25e5c4976dd2758583a194e65058316
+Subproject commit ca745dbf6dd3dbc5642fae6b6397e878b6eb8aca