Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "ansible: add roles to launch collectd, influxdb and grafana containers"
  - ansible: add roles to launch collectd, influxdb and grafana containers

    Change-Id: I330172a2165e51a1557f084fd85fce12dfaad3a7
    Signed-off-by: Gordon Kelly <gordon.kelly@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index e381323..2d105ab 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit e3813237e62a6b8b5d37f93b974f170fd83de28b
+Subproject commit 2d105ab75061d4d276b200d31b78ea649d5f2838