bug-report: etcd-ca status doesn't show unsigned certificate

[j1n6]

> ./etcd-ca init
> ./etcd-ca new-cert bob
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Created bob/key
Created bob/crt

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# Issue: doesn't show Unsigned bob
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> ./etcd-ca status
CA: OK (3652.95 days until expiration)

> ./etcd-ca sign bob
Enter passphrase for CA key (empty for no passphrase): 
Created bob/crt from bob/csr signed by ca/key

> ./etcd-ca status
CA: OK (3652.95 days until expiration)
bob: OK (3653.00 days until expiration)