cnf: resolve junit and hamcrest from the repositories

After fixing FileRepo today, this now works

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
templates: avoid versions in file names of 'plugins' jars

Makes it all a bit easier to manage since the versions are
not needed in those file names.

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>