Added delay to purge-broken-files unittest. Since the repair introduces artifical filelists, there is sometimes a race in CI where the purge is faster than a second causing the time sequences to not line up during testing.
Added delay to purge-broken-files unittest.
Since the repair introduces artifical filelists, there is sometimes a race in CI where the purge is faster than a second causing the time sequences to not line up during testing.

mnaiman/duplicati,mnaiman/duplicati,duplicati/duplicati,duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati,mnaiman/duplicati,mnaiman/duplicati,duplicati/duplicati,duplicati/duplicati