Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Clean requirements.txt
    
    It removes all requirements which are not detected by pipreqs [1]
    except:
      - robotframework-httplibrary
      - robotframework-requests==0.4.7
      - robotframework-sshlibrary==2.1.3
    
    They seem indirectly required for the next ODL suites: old_netvirt
    and fds.
    
    It also defines pbr as requirement and orders dnspython3 conditions.
    
    [1] https://github.com/bndr/pipreqs
    
    Change-Id: Idcd01296e5a5862ff8528dc083468b5c4905c9f9
    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 997969d3d79bcebf13aeae8763b2c9747df0370
+Subproject 3f46c1858ccfc08dc6b5a5a5ce123f2f3fcf223