Build & testsuite cleanup, Maven upgrade

- upgrade maven to 3.1.1
- add minimum maven version requirement to 3.1.0
- unify surefire configuration
- upgrade to newer surefire
- move most of surefire configuration to plugin def section
- unify basic testsuite by removing full & web configs
- introduce -Phelp plugin when you need to pring debug help for TS
- WFLY-2124 Revisit LDAP testing within the testsuite.
- remove bunch of unneeded System.out usages.

with this changes new surefire plugin works ok also with -Dtest=testname