Better differentiate between unsealed and sealed servers

[jaxxstorm]

Currently, when you run unseal, it's not clear if the server is sealed or unsealed without grokking the comments.

Example:

INFO[0000] Using GPG
Please enter your password:
INFO[0005] Unseal operation performed                    host=consul-2 progress=1 threshold=3
INFO[0005] Vault is unsealed!                            host=consul-1 progress=0 threshold=3

It would be better to have either:

• Some colour coding to the output
• Another field with the current status of the server