Update git submodules

* Update docs/submodules/barometer from branch 'master'
  - Merge "Switch from openstack.creds to the new env_file"
  - Switch from openstack.creds to the new env_file

    This file was renamed to avoid linking Kubernetes testcases to
    OpenStack credentials.

    This patch is mandatory for gating.

    Change-Id: I6b4e7e83d6dfc8cf1d60bf016ef258a273156ffe
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 69b5da2..763b590 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 69b5da25c2d1ca62fe08fd4088366a5341372c7c
+Subproject commit 763b590b90a7db5bc22ae95ffce8eea8276c8e2a