Don't sleep in integration tests (#6636)
Don't sleep in integration tests (#6636)

Fixes #6635.

* Don't sleep in integration tests.

* add backslash
lmcro/letsencrypt,stweil/letsencrypt,stweil/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt