Reamer opened a new pull request #3897:
URL: https://github.com/apache/zeppelin/pull/3897
### What is this PR for?
Travis-CI:
- remove all environment variables from the build matrix, to use the same
cache for all jobs
- activate the mysql service only when this service is needed
- activate the xvfb service, when is necessary and possible
- removed Bower Caching to remove too many complicated lines in Travis-ci
- Giving the test names
Other:
- Ignore the tests in 'HeliumApplicationFactoryTest.java' to get the JUnit
tests running in the IDE + remove exclude in 'travis.yml
- Remove deprecation warning in maven-surefire-plugin
- Helium works better with an absolute path, because a relative path in
PATH, is not a good idea for local testing
- Remove JVM language dependent asserts
### What type of PR is it?
Improvement
### Todos
* [ ] - Task
### What is the Jira issue?
* https://issues.apache.org/jira/browse/ZEPPELIN-5024
### How should this be tested?
* Travis-CI: https://travis-ci.org/github/Reamer/zeppelin/builds/722697499
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
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