Description of problem:
kdump returns an incorrect value. kdump always returns 0 even if
kdump service fails to start up. For this, kdump looks operational
but it's not. This happens because kdump doesn't review the return value
of mkdumprd and kexec just after those commands are run. Consequently, kdump
needs to review the return value of any commands, and needs to exit
in the event that a command fails.

Version-Release number of selected component (if applicable):
kexec-tools-1.101-87

How reproducible:
Always

Steps to Reproduce:
1. Have kdump service fail to start due to some error.
2. run "echo $?"
3. run "service kdump status"
  
Actual results:
kdump returns 0.
kdump shows "Kdump is operational"

Expected results:
kdump returns a non-zero value.
kdump shows "Kdump is not operational"


Additional info:
Review an attached patch to fix this problem.