feat(backup): logs everything to stdout/err, implement lock file for both backup/restore #387

Job	Run time
E2E Create tests list	4s
E2E Verify code before tests	2m 6s
E2E performs backups before pod deletion and restores them even Jenkins status is restarted	11m 53s
E2E new Jenkins pod should be created after a restart	5m 56s
E2E authorization strategy is not overwritten after a restart	2m 17s
E2E creates vanilla Jenkins instance and configures it	4m 37s
E2E creates Jenkins instance with priority class and configures it	4m 16s
E2E runs kubernetes plugin job successfully	6m 17s
	37m 26s

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