Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Remove all references to /home/opnfv/repos/functest

    It completes the previous patch in Functest [1].

    [1] https://gerrit.opnfv.org/gerrit/#/c/36163/

    Change-Id: Idb334fe2cd394837f34690eb5d6426840424c150
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 0c930f3..2862964 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 0c930f3ac5205b238c583d286f104a69acfc0232
+Subproject commit 28629643e330e0025cfce9c842867254998c3d99