Maint: Lambda arity must match number of arguments

Running `puppet apply --parseonly` fails on ruby 1.9, because the arity
of the option method was 0, yet was being invoked with an argument, the
manifest to parse. Under ruby 1.8, this mismatch was allowed, but not
1.9.

See acceptance/tests/ticket_6928_puppet_master_parse_fails.rb
(#20284) Output one item per line for arrays in console output

To make it easier to read, pipe output and make shell loop from output
from faces it is good if they are printed one item per line for arrays.