Added tag endpoint to changelog for 0.15.2
## [0.15.2](https://github.com/MarquezProject/marquez/compare/0.15.1...0.15.2)
+### Added
+
+* Add endpoint to create tags [@hanbei](https://github.com/hanbei)
+
### Fixed
* Fixed build & release process for python marquez-integration-common package [@collado-mike](https://github.com/collado-mike)
