Add support for Elasticsearch v7.2.0.

Author: Jesse White

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>org.opennms.elasticsearch</groupId>
     <artifactId>elasticsearch-drift-plugin</artifactId>
-    <version>7.1.1-SNAPSHOT</version>
+    <version>7.2.0-SNAPSHOT</version>
 
     <licenses>
         <license>
@@ -22,7 +22,7 @@
     </parent>
 
     <properties>
-        <elasticsearch.version>7.1.1</elasticsearch.version>
+        <elasticsearch.version>7.2.0</elasticsearch.version>
 
         <!-- We use the build timestamp in the RPM version, so change the format to ensure that there
              are no invalid characters such as colons (:) -->
@@ -51,12 +51,6 @@
             <version>${elasticsearch.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.codelibs.elasticsearch.module</groupId>
-            <artifactId>lang-painless</artifactId>
-            <version>${elasticsearch.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>

src/test/java/org/opennms/elasticsearch/plugin/aggregations/bucket/histogram/OffsetIT.java

@@ -42,7 +42,6 @@
 import org.elasticsearch.action.index.IndexRequestBuilder;
 import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.index.mapper.DateFieldMapper;
-import org.elasticsearch.painless.PainlessPlugin;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.search.aggregations.BucketOrder;
 import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramInterval;
@@ -57,11 +56,11 @@
 public class OffsetIT extends ESIntegTestCase {
 
     protected Collection<Class<? extends Plugin>> nodePlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     protected Collection<Class<? extends Plugin>> transportClientPlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     @Override

src/test/java/org/opennms/elasticsearch/plugin/aggregations/bucket/histogram/ProportionalSumAggregatorIT.java

@@ -42,7 +42,6 @@
 import org.elasticsearch.action.index.IndexRequestBuilder;
 import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.index.mapper.DateFieldMapper;
-import org.elasticsearch.painless.PainlessPlugin;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.search.aggregations.BucketOrder;
 import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramInterval;
@@ -57,11 +56,11 @@
 public class ProportionalSumAggregatorIT extends ESIntegTestCase {
 
     protected Collection<Class<? extends Plugin>> nodePlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     protected Collection<Class<? extends Plugin>> transportClientPlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     @Override

src/test/java/org/opennms/elasticsearch/plugin/aggregations/bucket/histogram/SamplingIT.java

@@ -42,7 +42,6 @@
 import org.elasticsearch.action.index.IndexRequestBuilder;
 import org.elasticsearch.action.search.SearchResponse;
 import org.elasticsearch.index.mapper.DateFieldMapper;
-import org.elasticsearch.painless.PainlessPlugin;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.search.aggregations.BucketOrder;
 import org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramInterval;
@@ -57,11 +56,11 @@
 public class SamplingIT extends ESIntegTestCase {
 
     protected Collection<Class<? extends Plugin>> nodePlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     protected Collection<Class<? extends Plugin>> transportClientPlugins() {
-        return Arrays.asList(DriftPlugin.class, PainlessPlugin.class);
+        return Arrays.asList(DriftPlugin.class);
     }
 
     @Override