SpringBoot Use new update site for Spring Java Format's Eclipse plugin

SSIA

Comment From: pivotal-issuemaster

@k163377 Please sign the Contributor License Agreement!

Click here to manually synchronize the status of this Pull Request.

See the FAQ for frequently asked questions.

Comment From: pivotal-issuemaster

@k163377 Thank you for signing the Contributor License Agreement!

Comment From: snicoll

@k163377 thank you for making your first contribution to Spring Boot.