Fix test

Author: daipom

fluent-plugin-remote_syslog.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
+  spec.add_development_dependency "bundler", '~> 2.0'
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "test-unit"
   spec.add_development_dependency "test-unit-rr"

test/plugin/out_remote_syslog.rb

@@ -43,7 +43,7 @@ def test_write
       </format>
     ]
 
-    mock.proxy(RemoteSyslogSender::UdpSender).new("example.com", 5566, whinyerrors: true, program: "minitest") do |sender|
+    mock.proxy(RemoteSyslogSender::UdpSender).new("example.com", 5566, whinyerrors: true, program: "minitest", packet_size: 1024) do |sender|
       mock.proxy(sender).transmit("foo",  facility: "user", severity: "debug", program: "minitest", hostname: "foo.com")
     end