Add additional checks to VMs in 'ready' queues
'vm_checktime' sets interval for check_ready_vm
check_ready_vm fixups

- Correct key name ('check', not 'clone')
- Correct timestamp math (minutes, not seconds)
- Only search for the host in vSphere if we're actually doing a check
Update TODO
Merge pull request #11 from sschneid/check_ready_vms

Check VMs in 'ready' queue
Merge branch 'master' into name_change

Conflicts:
	vmpooler