Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "Add role to auto install docker on hosts - missing patch"
  - Add role to auto install docker on hosts - missing patch

    Small updates to ansible roles.
    Several minor updates in documentation.

    Change-Id: Id031cebc23301b6218f8ced0d261f844f270e37f
    Signed-off-by: Kamil Wiatrowski <kamilx.wiatrowski@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index ada3bb5..28bfd38 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit ada3bb5cda036c736b460b76552ce47dd8f40aa8
+Subproject commit 28bfd38af164d1b7983c57a0683636bc9a0781fc