Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Update bifrost SHAs
    
    There is a bug when ironic communicates with rabbitmq due to a parameter
    deprecation. This patch fixes it:
    
    https://review.openstack.org/#/c/609499/
    
    And we can take the opportunity to update all SHAs
    
    THere is a problem:
    
    "Unable to retrieve file contents\nCould not find or access '/home/opnfv/releng-xci/xci/infra/bifrost/playbooks/roles/common/venv_python_path.yml'"}
    
    That file is in:
    
    /home/opnfv/releng-xci/.cache/repos/bifrost/playbooks/roles/common/venv_python_path.yml
    
    As I am not sure how to fix the ansible PATH, for the time being, I just
    added to where Ansible is searching for it
    
    Change-Id: I8e60f43ed7fc78a8925efaa36e41b0d872ea9a74
    Signed-off-by: Manuel Buil <mbuil@suse.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
-Subproject 637814daf8715d70e1ee9b120ec6f8ebea0be9b
+Subproject dd7fb5f6ac6dc11027f3d916deaa86504f48919