Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "src: ensure hostname is included in collectd conf"
  - src: ensure hostname is included in collectd conf

    As part of the final step of copying all the appropriate configuration files to
    /opt/collectd/etc/collectd.conf.d make sure that the hostname is set.

    Change-Id: Iff1634ebcc647f7b6d6ec991d98bd199367f9d4e
    Signed-off-by: Maryam Tahhan <maryam.tahhan@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 435e73e..8e44b29 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 435e73e5550c92be75e4fde8bafbed54ea818437
+Subproject commit 8e44b29f6eca84e41aa8a5f3be5d006340d66d89