CLI.parseArguments turning all args to lowercase causes path name mismatch in Achitecture.java.

The CLI.parseArguments in [CLI.java](https://github.com/usc-softarch/arcade_core/blob/master/src/main/java/edu/usc/softarch/arcade/util/CLI.java) turns all CLI args to lowercase causes path name mismatch in Achitecture.java.
This issue results in errors when running clustering for projects that have uppercase version tags such [apache-struts](https://github.com/apache/struts).

