Force maven-plugin-site to version 3.0
Force maven-plugin-site to version 3.0

maven-plugin-site is forced to version 3.0 to resolve "AetherClassNotFound", see:

https://cwiki.apache.org/confluence/display/MAVEN/AetherClassNotFound

evili/django-jenkins-plugin,evili/django-jenkins-plugin,evili/django-jenkins-plugin,evili/django-jenkins-plugin