[s390x] Kdump fails to generate the vmcore over NFS when using persistent NIC name.

Issue

• On s390x z/VM, vmcore generation is getting filed over NFS when changing the NIC name to eth0 via udev rules.
• Serial console logs from RHEL 7.

         Starting dracut initqueue hook...                                      
[    0.796711] qeth: register layer 2 discipline                                
[    0.797924] qdio: 0.0.8002 OSA on SC 4 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA:RW
 A                                                                              
[    0.813153] netif_napi_add() called with weight 128 on device eth%d          
[    0.813290] qeth 0.0.8000: MAC address xx:xx:xx:xx:xx:xx successfully registe
red on device eth0                                                              
[    0.813293] qeth 0.0.8000: Device is a Virtual NIC QDIO card (level: V642)   
[    0.813293] with link type Virt.xxx QDIO (portname: )                        
         Mounting Configuration File System...                                  
[ [32m  OK   [0m] Mounted Configuration File System.                            
[  123.300885] dracut-initqueue[406]: Warning: dracut-initqueue timeout - starting timeout scripts                                                              
[  123.810429] dracut-initqueue[406]: Warning: dracut-initqueue timeout - starting timeout scripts                                                              
[  124.316115] dracut-initqueue[406]: Warning: dracut-initqueue timeout - starting timeout scripts                                                              
[  124.821711] dracut-initqueue[406]: Warning: dracut-initqueue timeout - starting timeout scripts                                                              

• Serial console logs from RHEL 8.

[   62.826000] NetworkManager[592]: <warn>  [1667982830.1571] settings: startup complete: profile "kdump-eth0" (1eee50c3-f18f-4d6e-b603-4aea50d6d05e) was waiting for non-existing device (with timeout "connection.wait-device-timeout=60000") 

[   63.227347] mount[605]: mount.nfs: Network is unreachable                    
[ [0;1;31mFAILED [0m] Failed to mount /mnt.                                     
See 'systemctl status mnt.mount' for details.