Bug 2175166

+++ This bug was initially created as a clone of Bug #2174296 +++

Description of problem:

The --onpart option is required for --noformat option in the part command.
If the --onpart option is missing, the installation fails with the following error.

    part --noformat must also use the --onpart option.

The installer generates /root/anaconda-ks.cfg including part commands with --noformat and without --onpart option.

The root cause is that "data.on_part" is used in the following code, since it doesn't exist in the definition of pykickstart side. It should be data.onPart.

./usr/lib/python3.9/site-packages/blivet/devices/partition.py

    def populate_ksdata(self, data):
        super(PartitionDevice, self).populate_ksdata(data)
        data.resize = (self.exists and self.target_size and
                       self.target_size != self.current_size)
        if not self.exists:
            ... snip ...
        else:
            data.on_part = self.name                     # by-id


Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 9.1

How reproducible:
Always

Steps to Reproduce:
1. Install RHEL 9.1 with 1 disk using the following kickstart commands.

ignoredisk --only-use=vda
clearpart --all --initlabel
part /boot --fstype="xfs" --ondisk=vda --size=1024 --label=boot
part pv.1300 --fstype="lvmpv" --ondisk=vda --size=10000
volgroup rootvg --pesize=4096 pv.1300
logvol / --fstype="xfs" --size=6000 --label="rootlv" --name=rootlv --vgname=rootvg
logvol swap --fstype="swap" --size=1024 --name=swaplv --vgname=rootvg
logvol /opt --fstype="xfs" --size=200 --label="optlv" --name=optlv --vgname=rootvg

2. Install RHEL9.1 with the same disk manually with GUI.

- custom partition
  / reformat
  /boot reformat
  /opt (no format) 
- minimal install

3. Check /root/anaconda-ks.cfg after the second installation.

Actual results:

anaconda-ks.cfg includes the part commands with --noformat and without --onpart option as below.

 part pv.24 --fstype="lvmpv" --noformat

And, RHEL9.1 installation with the same disk using anaconda-ks.cfg failed with the following error.

   part --noformat must also use the --onpart option.

Expected results:

--onpart is added into the part command with --noformat option.

Additional info:

I will make PR on upstream for this bug.