SCHEMA-247. Upgrades CLI for get and scan.

The ls tool can no longer perform get and scan functionality, but now print columns
and iteratively lists contents of multiple URI arguments.

Signed-off-by: Christophe Taton <taton@wibidata.com>
SCHEMA-257. Add KConstants.DEFAULT_INSTANCE_URI.

DEFAULT_URI is an alias for DEFAULT_INSTANCE_URI.
CLI tools use DEFAULT_INSTANCE_URI.

Signed-off-by: Christophe Taton <taton@wibidata.com>
lib/*.jar directory for integration tests.