NOT FOR MERGE: Project migration script
NOT FOR MERGE
This MR provides a pipeline job to make an announce in auto-deploy-app project that it's moving to auto-deploy-image in the context of #70 (moved).
Job Arguments:
- 
SOURCE_PROJECT_ID... The source project will be moved from.
- 
TARGET_PROJECT_ID... The target project will be moved to.
- 
DRY_RUN... Dry-run option.
- 
GITLAB_PAT... The actor of announcements.
Previously we announced in !83 (closed).
Edited  by Shinya Maeda