Cause: The guest agent was renamed from rhev-guest-agent to ovirt-guest-agent and the guest agent check did not account for this change.
Consequence: Users cannot install guest agent properly. They new they need ovirt-guest-agent, but the engine returned error for unknown guest agent ovirt-guest-agent. Moreover the ovirt-guest-agent conflicts rhev-guest-agent. This resulted in confusion among users.
Fix: The engine now accounts for the renamed guest agent.
Result: The engine no longer returns error for unknown guest agent.