Update .travis.yml

Author: krakowski

.travis.yml

@@ -15,7 +15,7 @@ jobs:
     - stage: snapshot
       script: ./gradlew artifactoryPublish --exclude-task test -Dbintray.user=${BINTRAY_USER} -Dbintray.key=${BINTRAY_KEY} -Dbuild.number=${TRAVIS_BUILD_NUMBER}
     - stage: release
-      script: ./gradlew bintrayUpload --exclude-task test -Drelease=true  -Dbintray.user=${BINTRAY_USER} -Dbintray.key=${BINTRAY_KEY} -Dbuild.number=${TRAVIS_BUILD_NUMBER}
+      script: ./gradlew bintrayUpload --exclude-task test -Drelease=true PbuildVariant=release -Dbintray.user=${BINTRAY_USER} -Dbintray.key=${BINTRAY_KEY} -Dbuild.number=${TRAVIS_BUILD_NUMBER}
 
 deploy:
   provider: releases
@@ -25,4 +25,4 @@ deploy:
   on:
     repo: hhu-bsinfo/dxmon
     branch: master
-    tags: true
+    tags: true