Add release.travisci Property

As per #2586 (comment)

Author: benjchristensen

gradle/buildViaTravis.sh

@@ -6,10 +6,10 @@ if [ "$TRAVIS_PULL_REQUEST" == "true" ]; then
   ./gradlew -Prelease.useLastTag=true build
 elif [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ "$TRAVIS_TAG" == "" ]; then
   echo -e 'Build Branch with Snapshot => Branch ['$TRAVIS_BRANCH']'
-  ./gradlew -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" snapshot --stacktrace
+  ./gradlew -Prelease.travisci=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" snapshot --stacktrace
 elif [ "$TRAVIS_PULL_REQUEST" == "false" ] && [ "$TRAVIS_TAG" != "" ]; then
   echo -e 'Build Branch for Release => Branch ['$TRAVIS_BRANCH']  Tag ['$TRAVIS_TAG']'
-  ./gradlew -Prelease.useLastTag=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" final --stacktrace
+  ./gradlew -Prelease.travisci=true -Prelease.useLastTag=true -PbintrayUser="${bintrayUser}" -PbintrayKey="${bintrayKey}" final --stacktrace
 else
   echo -e 'WARN: Should not be here => Branch ['$TRAVIS_BRANCH']  Tag ['$TRAVIS_TAG']'
   ./gradlew -Prelease.useLastTag=true build