Revert "Disable imageharvest tests" and enable tests
Revert "Disable imageharvest tests" and enable tests

Works for me.

This reverts commit aec407d0e53a5ad1b85f517ed57759e6717df0fe.

Bug: T167726
Change-Id: I22fd7e4b1195d32c04a010f0ee34c80fe013ac6c

PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core,wikimedia/pywikibot-core