Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1229404
Description of problem:
If "Use Puppet default" is selected, the value that is inserted as the default from Satellite 6, will never be used. Even though, it is still validated for parameter type.

This breaks when, for example, you use a module that uses an array parameter from a params.pp file like '"${$::class::params::var'}".

Setting 'parameter type' to array will break because the 'Default value' "${$::class::params::var}" parses as a string, but you cannot set it to 'string', because that will break merging of overrides.

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

How reproducible:

Steps to Reproduce:
1. install puppetlabs-ntp
2. check 'override', check 'use puppet default' and set parameter type to 'array'
3. try and override the value somewhere

Actual results:
you actually cannot even save the parameter setup, because Sat6 will tell you "Value to use when there is no match is invalid", as it is a string, and not an array

Expected results:
value of 'default value' is ignored for validation if 'use puppet default' is checked

Additional info: