Update create_unattended_iso_rocky.yml

Signed-off-by: abhishek-sa1 <abhishek.sa3@dell.com>

control_plane/roles/control_plane_customiso/tasks/create_unattended_iso_rocky.yml

@@ -14,7 +14,7 @@
 ---
 
 - name: Fetch rocky profile name
-  shell: set -o pipefail && grep 'Rocky-8' /mnt/rocky/EFI/BOOT/grub.cfg | head -1
+  shell: set -o pipefail && grep 'Rocky-8' {{ tmp_iso_dir }}{{ grub_cfg_path }} | head -1
   register: rocky_profile_name
   changed_when: false