Refactor vnf-onboarding to make VNF choice configurable

Currently vnf-onboarding enables piplines and gerrit repos for
all VNFs, but this should be configurable depends on customer needs.

Added job description for metaswitch-vsbc job and introduced separate
job for deploy cloudify.

Related-PROD: PROD-18930

Change-Id: I8fae90956bf18c23940d654d617eb06a95aaa617
16 files changed