Added test jar sources to generated artifacts

[alexjbush]

Description

Added the test jar sources to generated maven artifacts

Fixes #50

Type of change

Please delete options that are not relevant.

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Test jar sources can now be seen in Sonatype Snapshots repository.

[coveralls]

Pull Request Test Coverage Report for Build 409

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 79.028%

---

Totals
Change from base Build 407:	0.0%
Covered Lines:	1138
Relevant Lines:	1440

---

💛 - Coveralls