[maven-release-plugin] copy for tag powertac-parent-1.9.0

[maven-release-plugin] copy for tag powertac-parent-1.8.0

[maven-release-plugin] copy for tag powertac-parent-1.7.1

[maven-release-plugin] copy for tag powertac-parent-1.7.0

[maven-release-plugin] copy for tag powertac-parent-1.6.0

[maven-release-plugin] copy for tag powertac-parent-1.5.0

[maven-release-plugin] copy for tag powertac-parent-1.4.3

[maven-release-plugin] copy for tag powertac-parent-1.4.2

[maven-release-plugin] copy for tag powertac-parent-1.4.1