Bug#988449: redmine: run the testsuite during the build

Quack, Thanks a lot for preparing all this. I have no idea why this was not integrated before. I see in the history the focus was on the autopkgtest and I myself continued on that path when I took over with Kanashiro-kun so I can only speculate the test suite was not great before. Anyway, cu

Bug#988449: redmine: run the testsuite during the build

Package: redmine Version: 4.0.7-1 Severity: normal Tags: patch Hi, While backporting security fixes for redmine in stretch, I have enabled the test suite during the build process, which has helped catch some issues in the backports (such as usage of APIs from ruby 2.4+, not available in stretch).