[WFLY-3550] - Upgrade PicketLink to 2.6.0.Final.
WFLY-3520 Replace bundled maven with version that is downloaded from apache
WFLY-3520 - add windows powershell script to download maven
Use maven 3.2.2
Merge pull request #6434 from pedroigor/master

[WFLY-3550] - Upgrade PicketLink to 2.6.0.Final.
Merge pull request #6440 from ctomc/maven-packaging

WFLY-3520 Replace bundled maven with version that is downloaded from apache