Autodetection

[namliz]

As per aws/aws-sdk-go#1103 the AWS SDK leaves it up to users to set or discover the region if AWS_REGION is not set. This is convenient so I've added it.

Additionally I've added an aws-namespace flag so you can specify the namespace via a human readable name and it sets aws-namespace-id for you if it finds it.

[namliz]

I think you should also take 469c735.

Currently the service address and port are blank, all the info is in the ServiceMeta section instead.

The changes I've made mean one could do:

$ consul-aws sync-catalog -to-consul -aws-service-prefix=aws_ -aws-namespace elasticache
$ dig +short aws_foo.service.consul
foo.xxxxxx.0001.usw2.cache.amazonaws.com.
172.42.42.242

There is some weirdness with the phony consul-aws node having a fake ip but I don't really see the harm in that. I think these changes are in the spirit of what this this tool is trying to accomplish, certainly fits my use case very well now but I'd love to hear your thinking around this.

[hanshasselberg]

Thank you for your work @Zilman! I will review them end of this week or beginning of next week since it requires some testing on my side.

[namliz]

@i0rek any updates on this?

[hashicorp-cla]

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