Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Refactor tempest common"
  - Refactor tempest common
    
    It also renames two testcases and updates all docs because tests
    run in parallel in case of tempest smoke.
    
    To force one thread as before:
    run:
        module: 'functest.opnfv_tests.openstack.tempest.tempest'
        class: 'TempestCommon'
        args:
            mode: '^tempest\.(api|scenario).*\[.*\bsmoke\b.*\]$'
            option:
                - '--concurrency=1'
    
    JIRA: FUNCTEST-989
    
    Change-Id: I1348f5908400a5046be8edf983db4afa12e546c3
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/functest b/docs/submodules/functest
-Subproject 20ebb3ef9f52479ef0c1c15a52d0652dab40cd8
+Subproject db459d327a9429ae9340cc95fc5287e21885981