Add creates a new ImagePullJob Controller and adds it to the Manager with default RBAC.

SourceSecretKeyAnno is an annotations instead of label because the length of key may be more than 64.

SourceSecretUIDLabelKey is designed to select target via source secret.

TargetOwnerReferencesAnno records the keys of imagePullJobs that refers the target secret.

ReconcileImagePullJob reconciles a ImagePullJob object.