Description of problem:

After executing leapp preupgrade job successfully from Satellite WebUI, the remediation job to fix an inhibitor failed with below error:

Failed to initialize: RuntimeError - Failed rendering template: error during rendering: ERF90-5603 [TemplateInput::UnsatisfiedRequiredInput]: Value for required input 'Channel' was not specified

How reproducible:

100%

Is this issue a regression from an earlier version:

Steps to Reproduce:

1. Register RHEL-8 host with Satellite server. Enable Rex during registration.

2. Go Satellite WebUI >> Hosts >> All Hosts >> Select the host from the list >>  Select Action >> Preupgrade Check with leapp

3. After the job is executed successfully, Go to Preupgrade report

4.  Sort by Inhibitor >> Select the applicable remediation from the list >> Click Fix Selected

5.  The remediation job fails with below error:
Failed to initialize: RuntimeError - Failed rendering template: error during rendering: ERF90-5603 [TemplateInput::UnsatisfiedRequiredInput]: Value for required input 'Channel' was not specified

Actual behavior:

The remediation job fails.

Expected behavior:

The reported inhibitor should be fixed from Satellite WebUI.

Business Impact / Additional info:

Job Remediation Template:

if ! command -v leapp > /dev/null
then
  echo "Leapp is not installed."
  exit 1
fi

sed -i s/^AllowZoneDrifting=.*/AllowZoneDrifting=no/ /etc/firewalld/firewalld.conf

if ! command -v leapp > /dev/null
then
  echo "Leapp is not installed."
  exit 1
fi

rm -f /var/log/leapp/leapp-report.json
leapp preupgrade --channel $USER_INPUT[Channel]

echo "===leap_upgrade_report_start==="
cat /var/log/leapp/leapp-report.json

QE Tracker for https://issues.redhat.com/browse/SAT-28216