Using type in the ruby configuration DSL gives "'type' is deprecated" warning

[adammw]

Using type in the ruby configuration DSL gives "'type' is deprecated" warning, even though there is no alternative. All tests in test/config/test_dsl.rb use the "type" parameter, and @type would be a reserved ruby keyword for instance variables.

Minimal config.rb example:

source {
  type :forward
}

match('**') {
  type :null
}

Running with fluent/fluentd:v1.0.2-debian docker image in dry-run mode, get the log warning:

2018-06-21 21:02:16 +0000 [info]: fluent/log.rb:316:info: parsing config file is succeeded path="/fluentd/etc/fluent.conf.rb"
2018-06-21 21:02:16 +0000 [info]: fluent/log.rb:316:info: starting fluentd-1.0.2 as dry run mode ruby="2.3.3"
2018-06-21 21:02:16 +0000 [warn]: fluent/log.rb:336:warn: 'type' is deprecated parameter name. use '@type' instead.
2018-06-21 21:02:16 +0000 [trace]: fluent/log.rb:275:trace: registered output plugin 'null'
2018-06-21 21:02:16 +0000 [trace]: fluent/log.rb:275:trace: registered buffer plugin 'memory'
2018-06-21 21:02:16 +0000 [warn]: fluent/log.rb:336:warn: 'type' is deprecated parameter name. use '@type' instead.
2018-06-21 21:02:16 +0000 [trace]: fluent/log.rb:275:trace: registered input plugin 'forward'

[repeatedly]

Patch is here: #2034