[#101] Another attempt to get the pull request build to work while we…

… look into issues with the HSQLDB lock file. This time explicitely set a project property for gradle and then pass it through as environment variable to the tests using test task. Seems like using -D from command line only passes it in to the JVM for the gradle build but gradle forks another JVM for the tests so it wasn't being passed through. Tested locally and seems to work... famous last words

build.gradle

@@ -156,6 +156,10 @@ subprojects {
         minHeapSize = "256m"
         maxHeapSize = "1g"
 
+        if (project.hasProperty("TRAVIS_PULL_REQUEST")) {
+            systemProperty "TRAVIS_PULL_REQUEST", project.getProperty("TRAVIS_PULL_REQUEST")
+        }
+
         reports.html.destination = file("${reporting.baseDir}/test/${task.name}")
         jacocoTestReport.executionData += files("$buildDir/jacoco/${task.name}.exec")
     }

gradle/buildViaTravis.sh

@@ -3,7 +3,7 @@
 
 if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
   echo -e "Build Pull Request #$TRAVIS_PULL_REQUEST => Branch [$TRAVIS_BRANCH]"
-  ./gradlew build
+  ./gradlew build -PTRAVIS_PULL_REQUEST=true
 elif [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ "$TRAVIS_TAG" == "" ]; then
   echo -e 'Build Branch with Snapshot => Branch ['$TRAVIS_BRANCH']'
   ./gradlew -Prelease.travisci=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" -PsonatypeUsername="${sonatypeUsername}" -PsonatypePassword="${sonatypePassword}" build snapshot