Try to avoid codecov fluctuations (#2344)

* Try to avoid codecov fluctuations

* Less slowdown

* Another build tweak

* Build tweak

* Container bump

* Another build attempt

* One more test

azure-pipelines.yml

@@ -15,7 +15,7 @@ pool:
 jobs:
   - job: Build
     timeoutInMinutes: 360
-    container: maven:3-jdk-11
+    container: maven:3-openjdk-15
     steps:
       - task: DockerInstaller@0
         displayName: Docker Installer
@@ -32,7 +32,7 @@ jobs:
           script: mkdir -p $(MAVEN_CACHE_FOLDER); pwd; ls -al $(MAVEN_CACHE_FOLDER)
       - task: Maven@3
         env:
-          JAVA_HOME_11_X64: /usr/local/openjdk-11
+          JAVA_HOME_11_X64: /usr/java/openjdk-15
         inputs:
           goals: 'clean install'
           # These are Maven CLI options (and show up in the build logs) - "-nsu"=Don't update snapshots. We can remove this when Maven OSS is more healthy

hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/util/JpaInterceptorBroadcaster.java

@@ -29,6 +29,13 @@ import javax.annotation.Nullable;
 
 public class JpaInterceptorBroadcaster {
 
+	/**
+	 * Non instantiable
+	 */
+	private JpaInterceptorBroadcaster() {
+		// nothing
+	}
+
 	/**
 	 * Broadcast hooks to both the interceptor service associated with the request, as well
 	 * as the one associated with the JPA module.

pom.xml

@@ -2679,7 +2679,7 @@
 		<profile>
 			<id>CI</id>
 			<properties>
-				<surefire_jvm_args>-Dspring.test.context.cache.maxSize=2 -Dfile.encoding=UTF-8 -Xmx2648m -XX:TieredStopAtLevel=1 -Xverify:none -Dfile.encoding=UTF-8 -Xss128M -XX:MetaspaceSize=512M -XX:MaxMetaspaceSize=2048M</surefire_jvm_args>
+				<surefire_jvm_args>-Dspring.test.context.cache.maxSize=2 -Dfile.encoding=UTF-8 -Xmx2648m -XX:-TieredCompilation -Xverify:none -Dfile.encoding=UTF-8 -Xss128M -XX:MetaspaceSize=512M -XX:MaxMetaspaceSize=2048M -XX:ReservedCodeCacheSize=220M</surefire_jvm_args>
 			</properties>
 			<build>
 				<plugins>