Maven grooming, updated:

- Prerequisites from Maven minimum version 3.0.3 to 3.2
- maven-compiler-plugin 3.0 -> 3.1
- maven-surefire[-report]-plugin 2.14 -> 2.15
- maven-site-plugin 3.2 -> 3.3
- maven-project-info-reports-plugin 2.6 -> 2.7
Updated dependencies:

- testng 6.7 -> 6.8.8
- org.apache.ant:ant 1.9.0 -> 1.9.3
- org.codehaus.plexus:plexus-utils 3.0 -> 3.0.17
- org.apache.maven.doxia:doxia-sink-api 1.2 -> 1.5
Continued Maven grooming:

- Updated o.a.m.wagon:wagon-ssh-external from 2.0 to 2.6
- Synchronized site plugin version for src/it/report-goal/pom.xml
- Updated maven-fluido-skin from 1.3.0 to latest 1.3.1