add bin/ruby command to launch ruby scripts using the logstash launcher

use bin/ruby instead of hardcoded vendorized jruby

without :development

remove symlink check per PR discussiom, will re-introduce in a followup PR

bin/cpdump

@@ -1,7 +1,7 @@
-#!/usr/bin/env vendor/jruby/bin/jruby
+#!/usr/bin/env bin/ruby
 
 require_relative "../lib/bootstrap/environment"
-LogStash::Bundler.setup!({:without => [:build]})
+LogStash::Bundler.setup!({:without => [:build, :development]})
 require "logstash-core"
 require "logstash/environment"
 require "logstash/settings"

bin/ruby

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Run a ruby script using the logstash jruby launcher
+#
+# Usage:
+#   bin/ruby [arguments]
+#
+# Supported environment variables:
+#   LS_JVM_OPTS="xxx" path to file with JVM options
+#   LS_JAVA_OPTS="xxx" to append extra options to the defaults JAVA_OPTS provided by logstash
+#   JAVA_OPTS="xxx" to *completely override* the defauls set of JAVA_OPTS provided by logstash
+#
+# Development environment variables:
+#   USE_RUBY=1 to force use the local "ruby" command to launch logstash instead of using the vendored JRuby
+#   DEBUG=1 to output debugging information
+
+# use faster starting JRuby options see https://github.com/jruby/jruby/wiki/Improving-startup-time
+export JRUBY_OPTS="$JRUBY_OPTS -J-XX:+TieredCompilation -J-XX:TieredStopAtLevel=1"
+
+unset CDPATH
+
+. "$(cd `dirname $0`/..; pwd)/bin/logstash.lib.sh"
+setup
+
+ruby_exec "$@"