8e0097cb79
ETSI NFV doesn't define Lifecycle Management (LCM) workflow behaviors. Currently, Tacker has a default LCM workflow, VNF vendors can't change the default workflow. The default workflow doesn't satisfy some VNF's LCM requirements. We want to enable VNF vendor to customize their workflows by Action Driver. Change-Id: I49dce1bc2bfded9f69fdea1c1a48636af59d1f8b Blueprint: action-driver