Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Pharos Dashboard: Deploy once config is in place"
  - Pharos Dashboard: Deploy once config is in place

    Since configuration has shifted out of the docker-compose.yml file and
    the workspace gets recreated ever job, the config.env file needs to be
    copied into place before each deployment.

    JIRA: PHAROS-316

    Change-Id: I8c80f1148ad268428defa2f7eb1877d821a11491
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f6b7459..c99860d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f6b74591649003b937b6038d109a3019cac2f9aa
+Subproject commit c99860d6531ff48dee5f6f3d848314229bca6d77