Encode capistrano output messages to UTF-8 before manipulating them.

[byroot]

Hi, we had encoding issues with the datadog capistrano plugin:

Could not submit to Datadog: #<ArgumentError: invalid byte sequence in US-ASCII>
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog.rb:90:in `gsub'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog.rb:90:in `block in report'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog.rb:76:in `map'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog.rb:76:in `report'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog.rb:29:in `submit'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog/v2.rb:69:in `block (3 levels) in <module:Datadog>'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:138:in `instance_eval'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:138:in `invoke_task_directly'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/callbacks.rb:25:in `invoke_task_directly_with_callbacks'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/execution.rb:89:in `execute_task'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/bundler/gems/capistrano-recipes-328e2cdeb41d/lib/capistrano_recipes/task_timer.rb:26:in `block in execute_task_with_benchmarking'
/usr/lib/shopify-ruby/2.1.0-github/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/bundler/gems/capistrano-recipes-328e2cdeb41d/lib/capistrano_recipes/task_timer.rb:25:in `execute_task_with_benchmarking'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog/v2.rb:25:in `block in find_and_execute_task'
/usr/lib/shopify-ruby/2.1.0-github/lib/ruby/2.1.0/benchmark.rb:279:in `measure'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/dogapi-1.9.2/lib/capistrano/datadog/v2.rb:20:in `find_and_execute_task'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/callback.rb:38:in `call'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/callbacks.rb:141:in `block in trigger'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/callbacks.rb:141:in `each'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/configuration/callbacks.rb:141:in `trigger'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:35:in `execute!'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/lib/capistrano/cli/execute.rb:14:in `execute'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/gems/capistrano-2.15.5/bin/cap:4:in `<top (required)>'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/bin/cap:23:in `load'
/u/apps/shipit/releases/20141023173416/data/bundler/ruby/2.1.0/bin/cap:23:in `<main

This patch does fix it for us.

Regards.

[byroot]

@conorbranagan @wang-arthur any chance to get this merged?

[byroot]

Thanks!

[conorbranagan]

Sorry for the delay on this one, it's released with 1.15.0