Do not count generated-sources in coverage metrics

[kemitix]

Could Coveralls exclude code in located in the target/generated-sources from coverage reports?

I'm using the immutables.org library to create immutable value objects, which are created in target/generated-source/annotations/.

I use jacoco for local code coverage reporting and have excluded these classes using configuration/rules/rule/exclude entries. This works preventing Jacoco from objecting to coverage minimums not being met. (It still lists these the files in the HTML reports which is annoying, but not Coveralls problem).