Set Jenkins CI build to JDK 8.

Author: jxblum

ci/pipeline.properties

@@ -1,5 +1,5 @@
 # Java (JDK) versions
-java.main.tag=17.0.2_8-jdk
+java.main.tag=8u322-b06-jdk
 
 # Docker Container Images
 docker.container.image.java.main=harbor-repo.vmware.com/dockerhub-proxy-cache/library/eclipse-temurin:${java.main.tag}