mvnw wrapper shouldn't deppend on .m2/wrapper location

mvnw stores maven to ~/.m2/wrapper directory. But customers could have denied access to .m2 folder. They could have allowed access only to .m2/repository, because they want to protect settings.xml file.

Our mvnw script should download maven to project directory.

Possible solution could be adding these two lines to .mvn/wrapper/maven-wrapper.properties:

distributionBase=PROJECT
zipStoreBase=PROJECT

This issue is regression against EAP 7.0.0 and EAP 7.1.0.DR11.

FYI: unfortunately, distributionBase and zipStoreBase properties are not documented.