xci: playbooks: Copy scenarios instead of symlinking them

xci: playbooks: Copy scenarios instead of symlinking them

Previously, the scenarios were symlinked from the checked out location
to {{ playbook_dir }}/roles. However, the symlinks were pointless since
they only exist in our local releng-xci directory. The roles much also
be present in OPNFV_RELENG_PATH which is the place where the deployment
happens. We use 'rsync' to copy our local releng-xci directory to the
remote one so our roles can be automatically be placed there if we copy
them instead of symlinking them.

Change-Id: I735db71eedfaa51d7196761aa2af8329d86cb775
Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>
Signed-off-by: Markos Chandras <mchandras@suse.de>