Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Update Release notes for Euphretes release

    * Remove TOC as it is generated by read the docs
    * Remove version history
    * Add release date

    Change-Id: I7595804952944926f6ead4a3f675a86c375048f2
    Signed-off-by: Emma Foley <emma.l.foley@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 5bcc95f..787c0f3 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 5bcc95f1235a59912db174fdeb15098d08f761da
+Subproject commit 787c0f30f5027ac3d072f0c5e53f970d8273e3ac