Install Cloudify descritors in functest-vnf

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

Conflicts:
    docker/vnf/Dockerfile
    functest/opnfv_tests/vnf/ims/cloudify_ims.yaml

Change-Id: Ib317a491e54820f4edb01fcecfca9d2a08b40c0f
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
(cherry picked from commit 19807ef8967c21da41fe5f5566751be8de250434)