Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Ensure len(project_name) < 64

    https://build.opnfv.org/ci/view/functest/job/functest-apex-baremetal-daily-master/259/console
    https://build.opnfv.org/ci/view/functest/job/functest-fuel-baremetal-daily-master/428/console

    Change-Id: Ib64878962a71b6b45ef039fce8bfaa43172b2498
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 3eec6556fa20e51d5e6596253393199469c83556)

  - Create new project/user for tempest tests

    JIRA: FUNCTEST-1009

    Change-Id: I6b9bca3827ba6cc804c25689a896ca63eec6a78b
    Signed-off-by: Juha Kosonen <juha.kosonen@nokia.com>
    (cherry picked from commit 9d03fcdd488c385842b43fd914915cbe4ae5390a)