Update git submodules

* Update docs/submodules/barometer from branch 'stable/euphrates'
  - Modyfying method to get env variables in Barometer

    This patch adds changes to get the environment  variables
    into the baroneter tests

    Change-Id: I93f18d64d6db25885987b702b36f6d2403bcb24d
    Signed-off-by: Sharada Shiddibhavi <sharada.shiddibhavi@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 4a17308..eaba18b 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 4a173083f549e8a30292b9af9b33b7d7a4efece0
+Subproject commit eaba18b849439e2764c384cfd22145b851a413ee