Enable Stack Trace on CI Gradlew builds.

.travis.yml

@@ -6,7 +6,7 @@ os:
 jdk:
   - oraclejdk8
 
-script: ./gradlew --refresh-dependencies clean build
+script: ./gradlew --refresh-dependencies --stacktrace clean build
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock

Jenkinsfile

@@ -16,7 +16,7 @@ try {
 				node {
 					checkout scm
 					try {
-						sh './gradlew clean check --no-daemon --refresh-dependencies'
+						sh './gradlew clean check --no-daemon --refresh-dependencies --stacktrace'
 					}
 					catch (e) {
 						currentBuild.result = 'FAILED: check'