Extended to enable management of Floating IPs and Keypairs

### Floating IPs
Can query for available floating IPs for reuse with `list_floating_ips.rb`
Assign a new floating IP to project with `create_floating_ip.rb`
Assign a floating IP to a server using `create_floating_ip.rb`

### Keypairs
Query for keypairs with `list_keypairs.rb`
Create new keypair for user with `create_keypair.rb`
Assign keypair to server with change to `list_keypairs.rb`