End-to-end test: Quickstarts

We could add an end-to-end test which verifies Flink's quickstarts. It should do the following:

1. create a new Flink project using the quickstarts archetype
2. add a new Flink dependency to the pom.xml (e.g. Flink connector or library)
3. run mvn clean package -Pbuild-jar
4. verify that no core dependencies are contained in the jar file
5. Run the program