Spring Security Add quiet period to Jenkins builds

When two builds for the same branch run very close together, sonar can at times get caught in a race condition, and one of those runs will fail.

Each branch has its own sonar project now, so this won't happen when builds from two different branches are close together, but it can still happen for the same branch.

To reduce the likelihood of this happening, we can implement a quiet period with Jenkins so that builds for the same branch are separated by a few seconds or minutes.

Comment From: rwinch

We no longer use Jenkins, so closing this as invalid