Support of customized syncPeriod CLI flag

[prometherion]

TCPs should be reconciled regularly on a regular basis thanks to the syncPeriod controller-runtime option.

Please, refer https://pkg.go.dev/sigs.k8s.io/controller-runtime/pkg/manager.

A period sync happens for two reasons:
1. To insure against a bug in the controller that causes an object to not be requeued, when it otherwise should be requeued.
2. To insure against an unknown bug in controller-runtime, or its dependencies, that causes an object to not be requeued, when it otherwise should be requeued, or to be removed from the queue, when it otherwise should not be removed.

Originally posted by @jds9090 in #341 (comment)