Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "Enable write_redis plugin for barometer-collectd"
  - Enable write_redis plugin for barometer-collectd

    This change is to enable write_redis plugin in collectd
    due to DMA local-agent is going to use the plugin.

    Change-Id: I522b41278bb020a48f33ac18f4ad08351e51ca36
    Signed-off-by: Tomofumi Hayashi <tohayash@redhat.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 4c1b6b2..1db7418 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 4c1b6b2ea5cafcb07207ca07eb589fe34a6e5dd5
+Subproject commit 1db7418e39d41cb92e3b1af71d2cb4b9fabb29f2