[BUILD] Add profile that skips all validations

This commit adds a profile that skips all validation ie.
 - nocommit / tabs checking
 - forbidden API checks
 - license headers

It's not active by default but can easily be activated with
  `mvn -Pdev` or in the `~/.m2/settings.xml`

for reference see:
  http://maven.apache.org/guides/introduction/introduction-to-profiles.html