Allow passwordless usage of distribute:sftp
Allow passwordless usage of distribute:sftp

The net-sftp gem will try to use keys if no password is supplied,
otherwise it will prompt for a password.

irons/shenzhen,fastlane/shenzhen,yunheli/shenzhen,nomad/shenzhen,iAladdin/shenzhen,DouKing/shenzhen,sibext/shenzhen,1yvT0s/shenzhen,moongtaeng/shenzhen,RobinChao/shenzhen,aenglund/shenzhen,bobgodwinx/shenzhen,laoyoutiao/shenzhen,xingfukun/shenzhen,msdgwzhy6/shenzhen,yuByte/shenzhen,stepanhruda/shenzhen,smalltownheroes/shenzhen,yaoxiaoyong/shenzhen,dacaiguoguo/shenzhen,cnbin/shenzhen,osterzel/shenzhen,benzguo/shenzhen,mbaltaks/shenzhen,vinod1988/shenzhen,ngs/shenzhen,robertfalconer/shenzhen