Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Adding SNMP testcases to Functest-Barometer project

    This patch contains tetscases for another write
    plugin SNMP

    Change-Id: I281d21540cb95f1e74bfdaa6b5a355dc6f48c9b4
    Signed-off-by: Sharada Shiddibhavi <sharada.shiddibhavi@intel.com>
    Change-Id: I281d21540cb95f1e74bfdaa6b5a355dc6f48c9b4
    Signed-off-by: Sharada Shiddibhavi <sharada.shiddibhavi@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index cb18d3c..ac54d72 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit cb18d3ccb4d3b27fa814a3b73ff0d840ee992baf
+Subproject commit ac54d72c06e3af986bbd1f939003744568c3ac84