[OAP-1875]Generating CHANGELOG.md automatically for new releases (#1876)
[OAP-1875]Generating CHANGELOG.md automatically for new releases (#1876)

* [OAP-1875]Generating CHANGELOG.md automatically for every releases

* Add copyright of NVIDIA
Intel-bigdata/OAP,Intel-bigdata/OAP,Intel-bigdata/OAP,Intel-bigdata/OAP,Intel-bigdata/OAP,Intel-bigdata/OAP