added --force flag to manually download, if necessary, and use a built-in version of maven best for spark

Author: Brennon York <brennon.york@capitalone.com>

Closes #7374 from brennonyork/SPARK-8933 and squashes the following commits:

d673127 [Brennon York] added --force flag to manually download, if necessary, and use a built-in version of maven best for spark