Resolve Bug:853 - remove groovy from config code generator.

Replace 3 groovy classes with java equivalents.

Change-Id: I625f0498c3ccaedf0441c637ac61a9653c98e579
Signed-off-by: Tomas Olvecky <tolvecky@cisco.com>
Merge "Resolve Bug:853 - remove groovy from config code generator."