relicense project to Apache 2.0 (opendatahub-io#69)

relicense project to Apache 2.0 per the recent Open Data Hub accepted ADR,
https://github.com/opendatahub-io/architecture-decision-records/blob/main/ODH-ADR-0003-use-apache-2-0-licence.md

Author: gregsheremeta