Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Conform with vyos descritor updates

    The new inputs [1] must be set else the testcase simply fails [2].

    JIRA: FUNCTEST-936

    [1] https://github.com/oolorg/opnfv-vnf-vyos-blueprint/commit/794f8a0594ed4c461c7d1d08d6b0ef9fb12004e2
    [2] https://build.opnfv.org/ci/view/functest/job/functest-daisy-baremetal-daily-master/12/console

    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    Change-Id: I1113581feac7d4dc901ba197caed4fddd5994929