Check crash dump when there’s a kernel panic

• Related issues: #1357 Crash dump not written when kernel panic occurs

Verification Steps

1. Created new single node cluster with 16GB RAM
2. Booted into debug mode from GRUB entry
3. Created several VMs
4. triggered kernel panic with echo c >/proc/sysrq-trigger
5. Waited for reboot
6. Verified that dump was saved in /var/crash

Expected Results

1. dump should be saved in /var/crash