Update git submodules

* Update docs/submodules/barometer from branch 'stable/euphrates'
  - Removing collectd restart process before Gnocchi test

    In this patch we remove the step of restarting collectd before
    Gnocchi test and adding it only before CSV testing. This also
    has fix to functest result status at the end of test execution.

    Change-Id: I2113ce8c5234535ab6f8d8c524038ead39e6df38
    Signed-off-by: Sharada Shiddibhavi <sharada.shiddibhavi@intel.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index d3dec79..5cd59c7 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit d3dec798c805bc56d0f8a8fbda516faf5042adab
+Subproject commit 5cd59c78f1adf78014b37b59332715018e1e6219