Bug 1356475

Description of problem:
When trying to Hot unplug CPU along with Memory hot add,
the cpu hot plug operation fail on RHEV side (not supported), and the Memory new value seem to not propagated correctly to RHEV,
however on CFME side this request succeed.

For example, 
For a VM with sockets=4, cores per socket=1, and memory=100M, guaranteed memory=100M, 
VM reconfigure: CPU sockets 4->1, and memory 100M->256M.

This request succeed:
VM Reconfigure for: vm - Memory: 256 MB, Processor Sockets: 1, Processor Cores Per Socket: 1, Total Processors: 1
Last Message VM Reconfigure complete

On RHEV side, the CPU un plug hot plug fail on not supported succeed, and the memory hot add fail on value not being a multiply of 256M (though the value entered on CFME side was 256M), therefore it seems the memory new value was not passed correctly to RHEV.

RHEV Events:
Jul 14, 2016 6:57:18 AM
VM vm configuration was updated by admin@internal.
601a7d1a
oVirt

Jul 14, 2016 6:57:18 AM
Failed to hot set number of CPUS to VM vm. Underlying error message: Hot un-plugging a CPU is not supported for cluster version 3.6 and architecture x86_64.
4389ee6d
oVirt

Jul 14, 2016 6:57:18 AM
VM vm was configured with 100mb of memory while the recommended value range is 256mb - 65536mb
oVirt

Jul 14, 2016 6:57:18 AM
VM vm configuration was updated by admin@internal.
64f7b766
oVirt

Jul 14, 2016 6:57:18 AM
Failed to hot set memory to VM vm. Underlying error message: Cannot hot set memory VM. Plugged memory must be multiplication of 256.

Version-Release number of selected component (if applicable):
CFME 5.6.0.11-rc2.2.20160614152915_f315c68
RHEVM-3.6.6.2-0.1.el6

How reproducible:
100%


Actual results:
1. The request for setting CPU hot Unplug & Memory hot add together, Succeed.
2. Memory hot add value is not propagated correctly to RHEV, if done along with CPU hot plug.

Expected results:
1. The request for setting CPU hot plug & Memory hot add together, should Fail, 
if one of these operations fail (in this case both operations failed),
and the errors from RHEV should be propagated from RHEV (and displayed in the request result)  
2. Memory hot add value should be passed correctly to RHEV, if done along with CPU hot plug, but this is handled in bug 1356468.