update log4j2properties.erb for [%node_name]%markers

elasticsearch.log : [2019-06-20T00:45:20,052][WARN ][o.e.c.l.LogConfigurator  ] [] Some logging configurations have %marker but don't have %node_name. We will automatically add %node_name to the pattern to ease the migration for users who customize log4j2.properties but will stop this behavior in 7.0. You should manually replace `%node_name` with `[%node_name]%marker ` in these locations:
  /etc/elasticsearch/elastic-elk1/log4j2.properties

This is what this is doing.

templates/etc/elasticsearch/log4j2.properties.erb

@@ -7,20 +7,20 @@ logger.action.level = debug
 appender.console.type = Console
 appender.console.name = console
 appender.console.layout.type = PatternLayout
-appender.console.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] %marker%m%n
+appender.console.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] [%node_name]%marker%m%n
 
 <%- if @file_rolling_type == 'file' -%>
 appender.fixed.type = File
 appender.fixed.name = fixed
 appender.fixed.fileName = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}.log
 appender.fixed.layout.type = PatternLayout
-appender.fixed.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] %marker%.-10000m%n
+appender.fixed.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] [%node_name]%marker%.-10000m%n
 <%- else -%>
 appender.rolling.type = RollingFile
 appender.rolling.name = rolling
 appender.rolling.fileName = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}.log
 appender.rolling.layout.type = PatternLayout
-appender.rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] %marker%.-10000m%n
+appender.rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] [%node_name]%marker%.-10000m%n
 <%- if @file_rolling_type == 'dailyRollingFile' -%>
 appender.rolling.filePattern = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}-%d{yyyy-MM-dd}-%i.log.gz
 appender.rolling.policies.type = Policies
@@ -49,7 +49,7 @@ appender.deprecation_rolling.type = RollingFile
 appender.deprecation_rolling.name = deprecation_rolling
 appender.deprecation_rolling.fileName = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_deprecation.log
 appender.deprecation_rolling.layout.type = PatternLayout
-appender.deprecation_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] %marker%.-10000m%n
+appender.deprecation_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] [%node_name]%marker%.-10000m%n
 appender.deprecation_rolling.filePattern = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_deprecation-%i.log.gz
 appender.deprecation_rolling.policies.type = Policies
 appender.deprecation_rolling.policies.size.type = SizeBasedTriggeringPolicy
@@ -70,7 +70,7 @@ appender.index_search_slowlog_rolling.type = RollingFile
 appender.index_search_slowlog_rolling.name = index_search_slowlog_rolling
 appender.index_search_slowlog_rolling.fileName = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_index_search_slowlog.log
 appender.index_search_slowlog_rolling.layout.type = PatternLayout
-appender.index_search_slowlog_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c] %marker%.-10000m%n
+appender.index_search_slowlog_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c] [%node_name]%marker%.-10000m%n
 appender.index_search_slowlog_rolling.filePattern = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_index_search_slowlog-%d{yyyy-MM-dd}.log
 appender.index_search_slowlog_rolling.policies.type = Policies
 appender.index_search_slowlog_rolling.policies.time.type = TimeBasedTriggeringPolicy
@@ -86,7 +86,7 @@ appender.index_indexing_slowlog_rolling.type = RollingFile
 appender.index_indexing_slowlog_rolling.name = index_indexing_slowlog_rolling
 appender.index_indexing_slowlog_rolling.fileName = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_index_indexing_slowlog.log
 appender.index_indexing_slowlog_rolling.layout.type = PatternLayout
-appender.index_indexing_slowlog_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c] %marker%.-10000m%n
+appender.index_indexing_slowlog_rolling.layout.pattern = [%d{ISO8601}][%-5p][%-25c] [%node_name]%marker%.-10000m%n
 appender.index_indexing_slowlog_rolling.filePattern = ${sys:es.logs.base_path}${sys:file.separator}${sys:es.logs.cluster_name}_index_indexing_slowlog-%d{yyyy-MM-dd}.log
 appender.index_indexing_slowlog_rolling.policies.type = Policies
 appender.index_indexing_slowlog_rolling.policies.time.type = TimeBasedTriggeringPolicy