Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Set scheduler_available_filters to all

    It indicates all filters that are included with nova are enabled [1].

    [1] https://docs.openstack.org/tempest/latest/sampleconf.html

    Co-Authored-By: Viktor Tikkanen <viktor.tikkanen@nokia.com>
    Change-Id: I0d1943941d62d2eee418200c69e8198cd858383e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit ff2ba1fd18b05bf1b031e78d2589028968bbe906)

  - Temporarily disable shelve

    They are blocking in Orange Openlab as the support is missing.
    A dynamic check has to be implemented before activating it.

    Change-Id: I8d87251fa4589f96d3515e411aeec5e79b7e7960
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 1da4b519f8e73d3be9e37f9d72367654bf662e63)