Description of problem:

Upon some problematic state or configuration of a vm, an exclamation mark appears next to a VM symbol in webadmin-> Virtual Machines tab, and hovering above it should present the user with the relevant message.
e.g. If there's a difference between the Timezone configuration of the vm in the system and the actual timezone of the vm, than the following message should appears when hovering mouse above the exclamation mark:
"Actual timezone in the guest differs from the configuration".
Right now no message appear with the exclamation mark, this was tried with different causes for this behaviour (1 - the above example, 2- difference between VM's actual OS and the OS configured in rhevm).

Version-Release number of selected component (if applicable):
rhevm-3.6.3-0.1.el6.noarch

How reproducible:
always

Steps to Reproduce:
1. Create a vm and install some RHEL OS on it.
2. Set the VM os in rhevm to some windows version and restart the vm.
3. An exclamation mark appears next to the vm icon - hover the mouse above it.

Actual results:
Nothing happens, no message is seen.

Expected results:
The following message should appears in this case:
"Actual operating system type differs from the configuration"