Updated Jenkinsfile (codice#5190)

 Removed the Xss thread stack size option and added a minimum heap memory option to maven opts

Author: rzwiefel

Jenkinsfile

@@ -27,7 +27,7 @@ pipeline {
         DOCS = 'distribution/docs'
         ITESTS = 'distribution/test/itests/test-itests-ddf'
         POMFIX = 'libs/libs-pomfix,libs/libs-pomfix-run'
-        LARGE_MVN_OPTS = '-Xmx8192M -Xss128M -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC '
+        LARGE_MVN_OPTS = '-Xmx4G -Xms1G -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC '
         DISABLE_DOWNLOAD_PROGRESS_OPTS = '-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn '
         LINUX_MVN_RANDOM = '-Djava.security.egd=file:/dev/./urandom'
         COVERAGE_EXCLUSIONS = '**/test/**/*,**/itests/**/*,**/*Test*,**/sdk/**/*,**/*.js,**/node_modules/**/*,**/jaxb/**/*,**/wsdl/**/*,**/nces/sws/**/*,**/*.adoc,**/*.txt,**/*.xml'