Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "export LANG="C" rather than  export LANG="c""
  - export LANG="C" rather than  export LANG="c"

    opnfv@linux-r4ap:~$ export LANG="C"
    opnfv@linux-r4ap:~$ perl -E exit
    opnfv@linux-r4ap:~$ export LANG="c"
    opnfv@linux-r4ap:~$ perl -E exit
    perl: warning: Setting locale failed.
    perl: warning: Please check that your locale settings:
            LANGUAGE = "en_US.UTF-8",
            LC_ALL = "",
            LANG = "c"
        are supported and installed on your system.
    perl: warning: Falling back to the standard locale ("C").

    paste of deploy failing: https://hastebin.com/fufananewa.sql

    Change-Id: Id1ef2430887251044700e03fc1f294ad18adf90a
    Signed-off-by: agardner <agardner@linuxfoundation.org>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index 94a2ba4..bd562fe 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit 94a2ba4e51247f1f151e39d4902ad6e56e09e10c
+Subproject commit bd562fe7a3cc7c0d4849158c5a2e5c29ca60e571