Description of problem:
"Package Action - Script Default" template fails to render dnf/yum binary name for foreman host (e.g. Satellite host)

# Action
       -y $USER_INPUT[options] install $USER_INPUT[package]
  RETVAL=$?
[ $RETVAL -eq 0 ] || exit_with_message "Package action failed" $RETVAL

So the REX job then fails with:

   1: /var/tmp/foreman-ssh-cmd-<<uuid>>/script: line 21: -y: command not found
   2: Package action failed, exiting...
   3: Exit status: 127
   4: StandardError: Job execution failed

For content host the template works since content hosts have some katello facet which foreman-only host doesn't have.
 

How reproducible:
Render any Package/Group install/remove/update template that uses Script Default transport.
 

Is this issue a regression from an earlier version:
yes
 

Steps to Reproduce:

1. Navigate to Hosts > Templates > Job Templates > select "Package Action - Script Default"

2. In editor window header click "Preview" and select Satellite host (matches to Satellite FQDN)

3. Check the script - line 21

       -y $USER_INPUT[options] $USER_INPUT[action] $USER_INPUT[package]

Actual behavior:
[Describe the issue in detail, including what is happening and where]
-y ....... - DNF binary name is missing

Expected behavior:
[Describe what should be happening instead]
dnf -y ....... - DNF or YUM binary name is present

Business Impact / Additional info: