Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - docs: updated userguide for E release.

    * Updated fuel reference with Apex.
    * Updated instructions for Centos 7.
    * Updated configuration to match sample configuration.
    * Fixed typos.

    Change-Id: I40fc3eb423589e4643eefb31259937f8a6f96a15
    Signed-off-by: Jain, Shobhi <shobhi.jain@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index e545028..04e102b 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit e545028e5fb1cd5de3d7bc7ac32bafb34d60eb27
+Subproject commit 04e102b5abcff93b10eaa08a64249a7e0c709c34