Revert "Invoke perlbrew-installer with bash"
Revert "Invoke perlbrew-installer with bash"

This reverts commit dcf629c3a43d84d815d36c71ed06d11f6faa71ed.

https://github.com/gugod/App-perlbrew/issues/407 has been fixed.

DanielG/travis-cookbooks,DanielG/travis-cookbooks,vinaykaradia/travis-cookbook-cloned,tianon/travis-cookbooks,tianon/travis-cookbooks,tianon/travis-cookbooks,ljharb/travis-cookbooks,Acidburn0zzz/travis-cookbooks,ardock/travis-cookbooks,DanielG/travis-cookbooks,Acidburn0zzz/travis-cookbooks,spurti-chopra/travis-cookbooks,travis-ci/travis-cookbooks,bd808/travis-cookbooks,dracos/travis-cookbooks,tianon/travis-cookbooks,ljharb/travis-cookbooks,Distelli/travis-cookbooks,bd808/travis-cookbooks,johanneswuerbach/travis-cookbooks,dracos/travis-cookbooks,spurti-chopra/travis-cookbooks,travis-ci/travis-cookbooks,travis-ci/travis-cookbooks,vinaykaradia/travis-cookbook-cloned,DanielG/travis-cookbooks,Distelli/travis-cookbooks,Zarthus/travis-cookbooks,ardock/travis-cookbooks,Acidburn0zzz/travis-cookbooks,johanneswuerbach/travis-cookbooks,johanneswuerbach/travis-cookbooks,gavioto/travis-cookbooks,bd808/travis-cookbooks,tianon/travis-cookbooks,Acidburn0zzz/travis-cookbooks,vinaykaradia/travis-cookbook-cloned,vinaykaradia/travis-cookbook-cloned,Zarthus/travis-cookbooks,dracos/travis-cookbooks,Zarthus/travis-cookbooks,dracos/travis-cookbooks,spurti-chopra/travis-cookbooks,ardock/travis-cookbooks,gavioto/travis-cookbooks,Zarthus/travis-cookbooks,Distelli/travis-cookbooks,gavioto/travis-cookbooks,gavioto/travis-cookbooks,vinaykaradia/travis-cookbook-cloned,ardock/travis-cookbooks,Distelli/travis-cookbooks,ljharb/travis-cookbooks