fix #851 add elasitcsearch.min.version

pom.xml

@@ -64,6 +64,7 @@
 
 		<!-- Elasticsearch -->
 		<elasticsearch.version>5.1.2</elasticsearch.version>
+		<elasticsearch.min.version>5.1.0</elasticsearch.min.version>
 		<cluster.runner.version>5.1.2.1-SNAPSHOT</cluster.runner.version>
 
 		<!-- Tomcat -->
@@ -662,7 +663,7 @@
 					</keyPassphrase>
 					-->
 					<requires>
-						<require>elasticsearch &gt;= ${elasticsearch.version}</require>
+						<require>elasticsearch &gt;= ${elasticsearch.min.version}</require>
 					</requires>
 					<mappings>
 						<!-- app -->