Merge pull request #1168 from phaedriel/jvm_options_duplicate

Author: smortex

manifests/config.pp

@@ -193,9 +193,11 @@
     else {
       # Add any additional JVM options
       $elasticsearch::jvm_options.each |String $jvm_option| {
+        $split_jvm_option = split($jvm_option, '=')
         file_line { "jvm_option_${jvm_option}":
           ensure => present,
           path   => "${elasticsearch::configdir}/jvm.options",
+          match  => $split_jvm_option.length ? { 2 => "^${split_jvm_option[0]}=", default => undef, },
           line   => $jvm_option,
           notify => $elasticsearch::_notify_service,
         }