Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - ansible: Fix custom 'influxdb_host' setting for grafana

    Previously there were 2 errors in ansible scripts for grafana:
    - influxdb_host variable value was unset
    - entry for /etc/hosts file was adding text "{{ influxdb_hostname }}"
    instead hostname stored in this variable

    Change-Id: I1821b3c5f5fea5c29386b1a57e37aadcf90dd2e6
    Signed-off-by: Radoslaw Jablonski <radoslawx.jablonski@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 9ac248a..659840a 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 9ac248a08de1f197bafbabbf43175b30ab19ec32
+Subproject commit 659840a7d99ecbacd767c10395a47615af415e63