Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 4a54e1e17c1c69e25b06f11ec9f6f84c186d6b98
  - Rename Functest CNTT testcases

    Test DB and API don't support suites which raise side effects in Cachet
    if both IaaS verification and CNTT conformance are executed.

    Change-Id: I29b2558f6e001ebf8826c889858be9d53784144b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0d7960c..4a54e1e 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0d7960cbb9d4f7f05f8378c8871ddf13e51c8255
+Subproject commit 4a54e1e17c1c69e25b06f11ec9f6f84c186d6b98