Provisioning hosts using Red Hat Satellite 6 Capsule Server fails when download policy for kickstart repos are set to On Demand

Issue

• Provisioning hosts using Satellite Capsule Server fails when the Satellite kickstart repos are set to On Demand and the Capsule Server synchronization is also set to On Demand.

• The Satellite Server is able to provision successfully, but provisioning using Capsule Server fails when the kickstart repositories have the On Demand download policy.
  Example, when provisioning a RHEL8.3 vm from the capsule, where the RHEL8.3 Kickstart repo is set to download policy "On Demand", dracut captures below logs during provisioning:

[   17.516924] rhel83test dracut-initqueue[1141]: anaconda: successfully fetched stage2 from http://cap6.example.com/pulp/repos/my_org/baseline_2020/RHEL_8_x86_64/content/dist/rhel8/8.3/x86_64/baseos/kickstart/
[   17.633120] rhel83test kernel: loop: module loaded
[   17.656135] rhel83test dracut-initqueue[1141]: losetup: /tmp/curl_fetch_url1/install.img: Warning: file does not fit into a 512-byte sector; the end of the file will be ignored.

• Capsule Server fails to provision hosts due to vmlinuz not being found.