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

[KeerthanaAP]

Fix for #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

[mkumatag]

again here also we are selecting the last partition to grow which is true in most of the cases but I'm wondering if we can write some logic so that it lists the linux partitions and only grow the last one, wdys @sudeeshjohn ?

[mkumatag]

I think this is good enough to fix the issue immediate, @KeerthanaAP lets open a different issue to explore the long term solution.

/approve
/lgtm

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