TSK-1050: fixed pushback to github and let the build fail if it wont work

.travis.yml

@@ -110,7 +110,9 @@ jobs:
         !:taskana-rest-spring-example-boot,!:taskana-rest-spring-example-wildfly,\
         !:taskana-simplehistory-spring-test,!:taskana-simplehistory-rest-spring-example
       before_cache: rm -rf "$HOME/.m2/repository/pro/taskana"
-      after_success: ci/change_version.sh -i -m . && ci/commitPoms.sh
+      # travis_terminate is necessary since after_success is a job phase which can change the build result.
+      # it is not documented, so this is a little hack. see: https://docs.travis-ci.com/user/job-lifecycle/#breaking-the-build
+      after_success: ci/change_version.sh -i -m . && ci/commitPoms.sh || travis_terminate 1
       deploy:
         provider: cloudfoundry
         username: $BLUEMIX_ACCOUNT

ci/commitPoms.sh

@@ -61,9 +61,7 @@ function main() {
     git config --global user.name $GH_USERNAME
 
     #commit all poms
-    git checkout -b "$branch"
-    #to compensate new updates
-    git pull
+    git checkout "$branch"
     git add "./*pom.xml"
     for file in "$@"; do
       [[ -n "$file" ]] && git add "$file"