run TestReOpen with both poll = true and false
run TestReOpen with both poll = true and false

this catches a bug with log rotation when using polling file watcher.

ando-masaki/tail,deepakm/tail,QLeelulu/tail,mathpl/tail,bububa/tail,miraclesu/tail,masahide/tail,ekini/tail,bububa/tail,dim/tail,flynn/tail,funkygao/tail,araddon/tail,bfitzsimmons/tail,walmartlabs/tail,wfxiang08/tail,mathpl/tail,GeertJohan/tail,liyam/tail,dim/tail,vektra/tail,42wim/tail,wrouesnel/tail,ActiveState/tail,davidsansome/tail,rakutentech/tail,GeertJohan/tail,funkygao/tail,bcandrea/tail