Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Install Cloudify descritors in functest-vnf

    It completes [1] to fix gates [2] and stops getting thirdparty vnf
    master (dependencies).

    It also prints data to ease debugging.

    [1] https://github.com/Orange-OpenSource/opnfv-cloudify-clearwater/commit/abd39d772c77317a25745feaaf312165e7588346
    [2] https://build.opnfv.org/ci/view/functest/job/functest-apex-baremetal-daily-fraser/110/console

    Change-Id: Ib317a491e54820f4edb01fcecfca9d2a08b40c0f
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>