Allow developer control of parallel testing (#214)

Author: MarkEWaite

Jenkinsfile

@@ -3,6 +3,7 @@
  https://github.com/jenkins-infra/pipeline-library/
 */
 buildPlugin(
+  forkCount: '1C',
   useContainerAgent: true,
   configurations: [
     [platform: 'linux', jdk: 11],

pom.xml

@@ -170,15 +170,6 @@
           </execution>
         </executions>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-surefire-plugin</artifactId>
-        <configuration>
-          <forkCount>1C</forkCount>
-          <parallel>all</parallel>
-          <useUnlimitedThreads>true</useUnlimitedThreads>
-        </configuration>
-      </plugin>
     </plugins>
   </build>