TOMEE-2107 - Upgrade CXF

[Daniel Cunha]

Hi folks,

I've sent a dependency upgrade for TomEE.
Upgrading CXF from 3.1.11 to 3.1.12 :)

PR sent: https://github.com/apache/tomee/pull/101

Please review it.
Best regard.

-- 
Daniel Cunha
https://twitter.com/dvlc_