Created attachment 1191489 [details]
screenshot

Description of problem:
Imporve error info when failed to open guest's console in rhevm4.0 on rhel6

Version-Release number of selected component (if applicable):
RHEVM4.0:4.0.2.3-0.1.el7ev
virt-viewer-2.0-14.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Login rhevm4.0 :https://ibm-x3250m5-03.rhts.eng.pek2.redhat.com on rhel6
2.Prepare a guest on rhevm4.0
3.Open guest's console using remote-viewer on rhel6
4.Can't open guest console with error "At least Remote Viewer version 99.0-1 is required to setup this connection, see https://ibm-x3250m5-03.rhts.eng.pek2.redhat.com/ovirt-engine/rhev/client-resources for details" pls refer to screenshot


Actual results:
As above description

Expected results:
Got info from  https://bugzilla.redhat.com/show_bug.cgi?id=1347656#c2 that rhel6 doesn't support rhevm4.0, but the error info didn't explain this clearly when failed to open guest's console in rhevm4.0 on rhel6 ,should improve error info as: At least Remote Viewer version 2.0-8 for rhel7 is required to setup this connection,see https://ibm-x3250m5-03.rhts.eng.pek2.redhat.com/ovirt-engine/rhev/client-resources for details

Additional info: