fix: reconcile toolbox CronJob

Summary

The Toolbox backup CronJob was not being created, so I added its creation to the reconciliation process.

Testing

Full CI pipeline

Add the following to the CR:

apiVersion: apps.gitlab.com/v1beta1
kind: GitLab
metadata:
  name: gitlab
spec:
  chart:
    values:
      gitlab:
        toolbox:
          backups:
            cron:
              enabled: true

Validate that the CronJob is created:

2021-12-06T18:33:42.548Z     DEBUG   controllers.GitLab      Creating object {"gitlab": "gitlab.n535b6660", "type": "*v1beta1.CronJob", "reference": "n535b6660/gitlab-toolbox-backup"}

$ kubectl get cronjob -n n535b6660
NAME                    SCHEDULE    SUSPEND   ACTIVE   LAST SCHEDULE   AGE
gitlab-toolbox-backup   0 1 * * *   False     0        <none>          3m49s