Update git submodules

* Update docs/submodules/releng from branch 'master'
  to f0b470ba1922d0c93fde4dd51c81003278ede66e
  - Disable CNTT daily jobs

    The Jenkins slave was shutdown by hand.

    Change-Id: I7d99dd54cfb04afe0daa10976f19ae97f8ab6e03
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index ceae2e2..f0b470b 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit ceae2e2fcfdc57292d02702095da17765fcf2e45
+Subproject commit f0b470ba1922d0c93fde4dd51c81003278ede66e