Description of problem:

Can not disable the REX pull provider installation in the generated script for Host Content source change.

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

Red Hat Satellite 6.14
Red Hat Satellite 6.15

How reproducible:

100%

Steps to Reproduce:

1. On satellite Web UI >> Hosts >> All Hosts >> Edit a Host
2. click on 'Change host content source' Select Content Source, Lifecycle environment and Content View
3. Select 'Update Hosts Manually' Option and view the generated script

Actual results:

The Script try to install package which is not required in SSH push mode Satellite environment:

~~~
...
echo "Starting deployment of REX pull provider"

1. check if system is registered
   subscription-manager identity > /dev/null
   if [ $? -ne 0 ]; then
   echo "Please register with subscription-manager first, then re-run '$0'."
   exit 1
   fi

set -e

echo '#'
echo '# Installing packages'
echo '#'

dnf -y install foreman_ygg_worker
...
~~

Expected results:

• Installation of package 'foreman_ygg_worker' is not required while Satellite is not configured to use 'REX pull mode'.

• Need a way to remove steps 'Starting deployment of REX pull provider'.