private boolean hasOldVersionAgent(Set<AgentInfo> agentInfos) {
		return agentInfos.stream().anyMatch(agentInfo -> !agentInfo.getVersion().equals(nGrinderVersion));
	}
Assign the agents on the given console.

@param perfTest          current performance test.
@param singleConsole     {@link SingleConsole} to which agents will be assigned.
@param grinderProperties {@link GrinderProperties} to be distributed.
@param agentCount        the count of agents.
ngrinder-controller/src/main/java/org/ngrinder/agent/service/AgentService.java