[Integrated] RFR: Lazily request repository JSON for GitHub

[Erik Helin]

Changeset: fbf47850
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2019-12-05 10:34:27 +0000
URL:       https://git.openjdk.java.net/skara/commit/fbf47850

Lazily request repository JSON for GitHub

Reviewed-by: rwestberg

! forge/src/main/java/org/openjdk/skara/forge/github/GitHubRepository.java