SCRD-3489 Add DELETE service file method
SCRD-3489 Add DELETE service file method

We need the delete method when we made changes to service configuration
files and wanted to revert those changes.

Change-Id: I3e7a425c7e802614f5d9d582d55eb30868a3f955

ArdanaCLM/ardana-service,ArdanaCLM/ardana-service