Description of problem:

When running `katello-installer --help` after installing or changing settings, katello-installer displays the currently configured values as 'default'. The effect of this is that the end-user will see differing values as 'default' depending on how their Satellite installation is configured.  This behavior has the potential of confusing the end-user. 


Version-Release number of selected component (if applicable):


How reproducible:
100%

Steps to Reproduce:
1. Install Satellite with default configuration (e.g. run katello-installer with no additional options)
2. Note the configuration of a feature (e.g. katello-installer --help | grep tftp) shows:
    --capsule-tftp                Use TFTP (default: false)

3. Enable the TFTP proxy (katello-installer --capsule-tftp)
4. Note the configuration of a feature (e.g. katello-installer --help | grep tftp) shows:
    --capsule-tftp                Use TFTP (default: true)

Expected results:

Currently, the meaning of 'default' as expressed means 'default values for all future invocations of katello-installer'. However, the user expects default to mean "values 'as shipped from the factory'". 

It would make sense to change 'default' to reflect 'current' as well as documenting the 'factory shipped defaults' (either in katello-installer --help or elsewhere) such as (as an example):

    --capsule-tftp                Use TFTP (current: true | default: false)