Added HTTP Listen directives (and use default value)
Added HTTP Listen directives (and use default value)

Case ZC-917: More cleanup.  However, there is a bug fix in here that
actually ignores the cpanel default port 80 specified at install
time.  This depends on cPanel & WHM change, ZC-918

CpanelInc/ea-apache2-config,CpanelInc/ea-apache2-config