tests: erepo upstream should not be its cache #2888
Description
Setting default remote as repository cache inside erepo is kinda hacky. This is not a real use case, and some test relay on the erepo property (that is automatically adding cached files to remote because cache and remote are the same thing). erepo remote should not be its cache.
This issue will probably be obsolete after #2599. In that case, the code responsible for setting remote in erepo should be completely removed.
Related #2852