Fix diskspace of / issue of rhel 9.* images.

[KeerthanaAP]

Fix for https://github.com/ppc64le-cloud/pvsadm/issues/620

Disk space before the fix in rhel 9.4:

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[root@newvm ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             4.0M     0  4.0M   0% /dev
tmpfs                751M     0  751M   0% /dev/shm
tmpfs                301M   32M  270M  11% /run
/dev/mapper/mpatha3   10G  2.0G  8.0G  20% /
/dev/mapper/mpatha2  960M  296M  665M  31% /boot
tmpfs                151M     0  151M   0% /run/user/0

Disk space after the fix:

[root@testvm ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             4.0M     0  4.0M   0% /dev
tmpfs                751M     0  751M   0% /dev/shm
tmpfs                301M   15M  286M   5% /run
/dev/mapper/mpatha3  119G  2.8G  117G   3% /
/dev/mapper/mpatha2  960M  296M  665M  31% /boot
tmpfs                151M     0  151M   0% /run/user/0

[ppc64le-cloud-bot]

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This pull-request has been approved by: KeerthanaAP, mkumatag

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