allow user to specify connection method to use

[jpatters]

Allows the user to specify the method to call to get the ip/domain name to connect to.
Might want to limit it to just the methods that are useful. But this works for my purposes. Just thought I would share. It will default to the current behaviour.

Methods that are useful are

public_dns_name
private_dns_name
public_ip_address
private_ip_address

Usage:

autoscale 'asg-name', connect_via: :public_dns_name, roles: [:app, :web]

[sixfeetover]

Nice - looks useful. I would like to see the methods whitelisted and use of public_send instead of send before merge.

[jpatters]

Makes sense. I'll try to get to this soon.