Veqryn aws support

[veqryn]

Include an actual AWS Signing client as supported in the repo.
The aws stuff is in its own package, so it won't get compiled into the end binary unless it is actually being used.
Also updated the recipe example.

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This change is 

[olivere]

I’m not an expert on AWS, so let me check this first. But providing our own solution to make AWS just work out of the box is definitely useful for Elastic users. Thanks.

[olivere]

Can you check the errors on Travis please. Looks like a wrong import path...

[veqryn]

I can say that I am using this exact package in production right now, against AWS.

I'm not sure what is going on with travis:

github.com/olivere/aws (download)
# cd .; git clone https://github.com/olivere/aws /home/travis/gopath/src/github.com/olivere/aws
Cloning into '/home/travis/gopath/src/github.com/olivere/aws'...
remote: Invalid username or password.
fatal: Authentication failed for 'https://github.com/olivere/aws/'
package github.com/olivere/aws: exit status 128

Does it fail because this hasn't been merged yet?

[olivere]

I think it’s

github.com/olivere/elastic/aws

not

github.com/olivere/aws

But I can fix it as well, no worries.

[veqryn]

ah, i didn't see that

[olivere]

Merged, thanks. Will be in 6.1.26.