Can't configure storage with the conf.arg parameter about fluent-plugin-systemd

[b-a-t]

So, the change is really small. Without much of the understanding, just mostly cut-n-paste:

--- in_systemd.rb.orig  2023-11-03 17:37:20.875477097 +0000
+++ in_systemd.rb       2023-11-04 00:17:33.088467944 +0000
@@ -50,7 +50,8 @@ module Fluent
       def configure(conf)
         super
         @journal = nil
-        @pos_storage = storage_create(usage: 'positions')
+        config = conf.elements.find{|e| e.name == 'storage' }
+        @pos_storage = storage_create(usage: 'positions', conf: config, default_type: DEFAULT_STORAGE_TYPE)
         @mutator = SystemdEntryMutator.new(**@entry_opts.to_h)
         @mutator.warnings.each { |warning| log.warn(warning) }
       end

If that seems legitimate, I can make an MR, although that diff is trivial to apply by hand as well.