Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - 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 b104e29..7b13f9b 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit b104e2981f0b0ec19f109e220cddc76d97d0ed1a
+Subproject commit 7b13f9babfff25d01c521a14f9db901542981945