Description of problem:
User is able to deselect the eap-core pack during console installation -> EAP is not installed.

Steps to Reproduce:
1. Start the console installation
2. Once asked for [eap-core] [y/n] hit 'n' and 'enter'
3. Finish the installation

Actual results:
EAP is not installed (FileNotFoundException is thrown if you choose to install HornetQ or WSCXF)

Expected results:
eap-core pack cannot be deselected during pack selection dialogue (like it is in gui installation)