Merge pull request #1856 from blee-techempower/fix-java-wildfly

Fix Java/wildfly-ee7 travis-ci build fail issue

frameworks/Java/wildfly-ee7/setup.sh

@@ -2,7 +2,7 @@
 
 fw_depends java7 maven
 
-export JAVA_OPTS="-Xms2g -Xmx2g -XX:MaxPermSize=256m -XX:+UseG1GC -XX:MaxGCPauseMillis=25 -verbosegc -Xloggc:/tmp/wildfly_gc.log"
+export JAVA_OPTS="-Djava.net.preferIPv4Stack=true -Xms2g -Xmx2g -XX:MaxPermSize=256m -XX:+UseG1GC -XX:MaxGCPauseMillis=25 -verbosegc -Xloggc:/tmp/wildfly_gc.log"
 
 mvn clean initialize package -Pbenchmark -Ddatabase.host=${DBHOST}
 target/wildfly-9.0.1.Final/bin/standalone.sh -b 0.0.0.0 &