Fix for repositories file in bootstrap scripts
Fix for repositories file in bootstrap scripts

When building quick and modules, the `scala-integrate` repo needs to be there
in order to find other modules. For example, partest needs xml. This should fix
the 2.13 build, it didn't fail in 2.12 because modules are not built.

scala/scala,lrytz/scala,lrytz/scala,martijnhoekstra/scala,lrytz/scala,lrytz/scala,martijnhoekstra/scala,martijnhoekstra/scala,scala/scala,scala/scala,lrytz/scala,scala/scala,scala/scala,martijnhoekstra/scala,martijnhoekstra/scala,scala/scala,lrytz/scala,martijnhoekstra/scala