Refactor ssh verify line to smartly parse extra options
Refactor ssh verify line to smartly parse extra options

Lines in an ssh auth key can begin like this:
tunnel="1",command="sh /etc/netstart tun1" ssh-rsa
Need to separate the parsing of options from the key. This patch groups the ssh
auth key line into two parts, [{options}* key]

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt