Allow splice components to be installed from ISO with '--enhanced_reporting' option.

1) Small change to add '-y' to yum upgrade so upgrade does not pausing waiting for "yes" confirmation

2) Added '--enhanced_reporting' CLI option, if specified then "splice", "spacewalk-splice-tool", and "ruby193-rubygem-splice_reports" will be installed.   Additionally we will install 'v8' to ensure mongodb is functional.  This is a workaround to a bz filed against ruby193-v8 which may break install of mongodb.