Update git submodules

* Update docs/submodules/releng from branch 'master'
  - CPERF: Fix csit odltools install

    PIP installing odltools attempts to install/update chardet which was
    already managed by yum in the container so need to remove it.

    Change-Id: Id07b76b080ff5b7e77d4c110c90a15018397d039
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9585dc8..38ca028 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9585dc88d84923ef6fbadb950adf6db9e9e6653a
+Subproject commit 38ca028551d2e498fdfe41627f8bf79a43a6a0fa