ES: enable log into file. Add option for node network host

ucoinj-elasticsearch-plugin/pom.xml

...rch-plugin/src/main/assembly/min/ucoinj-elasticsearch.bat

...arch-plugin/src/main/assembly/min/ucoinj-elasticsearch.sh

...-elasticsearch-plugin/src/main/assembly/min/ucoinj.config

...lasticsearch/src/main/filtered-resources/log4j.properties

...rch/src/main/java/io/ucoin/ucoinj/elasticsearch/Main.java

...a/io/ucoin/ucoinj/elasticsearch/config/Configuration.java

...coin/ucoinj/elasticsearch/config/ConfigurationOption.java

...in/ucoinj/elasticsearch/service/ElasticSearchService.java