version.rb missing from the plugin package

[sysmonk]

Hi,

We're finally upgraded to newest log-courier(2.9.0) and logstash(8.4.2) and we're seeing errors right out of the box - the logstash-input-courier plugin fails to load:

org.jruby.exceptions.LoadError: (LoadError) no such file to load -- log-courier/version
        at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:1017) ~[jruby.jar:?]
        at RUBY.<main>(/home/logstash/vendor/bundle/jruby/2.6.0/gems/log-courier-2.7.3/lib/log-courier/server.rb:20) ~[?:?]
        at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:1017) ~[jruby.jar:?]
        at home.logstash.vendor.bundle.jruby.$2_dot_6_dot_0.gems.logstash_minus_input_minus_courier_minus_2_dot_7_dot_4_minus_java.lib.logstash.inputs.courier.register(/home/logstash/vendor/bundle/jruby/2.6.0/gems/logstash-input-courier-2.7.4-java/lib/logstash/inputs/courier.rb:78) ~[?:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.register_plugins(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:233) ~[?:?]
        at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1865) ~[jruby.jar:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.register_plugins(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:232) ~[?:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.start_inputs(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:391) ~[?:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.start_workers(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:316) ~[?:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.run(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:190) ~[?:?]
        at home.logstash.logstash_minus_core.lib.logstash.java_pipeline.start(/home/logstash/logstash-core/lib/logstash/java_pipeline.rb:142) ~[?:?]

It looks like the version.rb (located in vendor/bundle/jruby/2.6.0/gems/log-courier-2.7.3/lib/log-courier/version.rb ) file is missing from the plugin when installed through logstash-plugin install logstash-input-courier.

Reproduction steps are simple:

• install logstash 8.4.2
• logstash-plugin install logstash-input-courier
• start using plugin by adding an input: input { courier { port => 12345 } }

If the version.rb from https://github.com/driskell/log-courier/tree/main/ruby/log-courier/lib/log-courier is copied over - everything starts working properly.