Unable to set crashkernel parameter in RHVH 4.0.7 with error: "Bootloader ... FAILED - It looks like there are no valid bootloader entries"

Issue

• While configuring kdump, after changing the crashkernel parameter, imgbase check gives error:

# imgbase check
Status: FAILED
Bootloader ... FAILED - It looks like there are no valid bootloader entries. Please ensure this is fixed before rebooting.
  Layer boot entries ... FAILED - No bootloader entries which point to imgbased layers
  Valid boot entries ... FAILED - No valid boot entries for imgbased layers or non-imgbased layers
Mount points ... OK
  Separate /var ... OK
  Discard is used ... OK
Basic storage ... OK
  Initialized VG ... OK
  Initialized Thin Pool ... OK
  Initialized LVs ... OK
Thin storage ... OK
  Checking available space in thinpool ... OK
  Checking thinpool auto-extend ... OK