CLOUDSTACK-2884: str object interpreted as index

Casting to an int for almostEqual comparison

Signed-off-by: Prasanna Santhanam <tsp@apache.org>
Log the actual NAT ip attempting to SSH into

VM IP is the guest IP and it's the NAT ip that is used for ssh.

Signed-off-by: Prasanna Santhanam <tsp@apache.org>