Make a generic define for creating integrations

[cwood]

This is a additional feature to add support of a generic define and then use yaml to convert the ruby data to a yaml format. This should make it so each integration is dynamic and allows for a full feature rich integration. A addition would be to make a $integartions argument in the main class to use hiera to declare integrations

[cwood]

there is a couple use causes here mostly I need this so I can define my integratins in hiera.

eg;

---
datadog_agent::integrations::
   apache:
       instances:
         - something: goeshere
         - anthorthing: goesheretoo

which sould turn into the client being like this

#/etc/dd-agent/integrations/apache.yaml
---
init_config: 
instances:
  - something: goeshere
  - anotherthing: goesheretoo

[irabinovitch]

@cwood Thanks for your efforts here. Our team will review shortly. In the mean time, can you help rebase/resolve the merge conflicts? That will help with testing/review.

[cwood]

Sounds good @irabinovitch

[cwood]

Iv done a rebase onto upstream master. Would love to get this merged in.

[cwood]

Iv fixed the tests for this. So should be good.

[cwood]

Any update on if this can get merged in? This could solve alot of your other intergration problems. Since this is a simple ruby -> yaml conversion. We have been using this for other integrations not even provided via a class in this module.

[truthbk]

@cwood real sorry to ask you to rebase again, and maybe address the conflicts please. Once that's done I'll move quickly - promised 😊

[cwood]

Looks like the build is failing for a gem depdencie rahter than from code.

[truthbk]

@cwood - indeed this is unrelated to your changes. Hoping to fix travis soon (I've got it ~66% of the way solved), still having some issues with ruby 2.2.3 and some older puppet module versions. I'll ping you to rebase soon. Apologies.

[cwood]

@truthbk is there anything I can do to speed up this process? This has been on going for months now and I still havnt gotten any traction. This would save people a lot of time and just allow generic intergrations via hiera instead of special classes for every type of integration, + every custom check people want to write.

[truthbk]

Merged #233 - closing this one.

[cwood]

Wish I had this much speed heh.