DVCS Running hourly sync job blocks adding repositories to newly added organization

Issue Summary

This is reproducible on Data Center: yes

In DVCS there are two jobs. First one is sync job which synchronize organizations in every hour. Second one is a job which adds repositories to newly added organization. The problem is that both jobs use the same cluster lock com.atlassian.jira.plugins.dvcs.service.RepositoryService.syncRepositoryList. It may happen that second job won’t start because first job is in progress and holds lock.

Steps to Reproduce

1. Hourly job should be in progress. When it starts and how long it runs you can check here:
   • ⚙ -> System -> Scheduled details
   • Search for “com.atlassian.jira.plugins.dvcs.scheduler.DvcsScheduler” click "Show more"
   • You should see similar details:
     
2. Add new organization on DVCS admin panel. 

Expected Results

Organization should be added and should have all repositories.

Actual Results

Organization is added to DVCS but without repositories:

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available