New repo layout

[masci]

Why

Use packages and folder structure to reflect the different agent components: Collector, Aggregator, etc.

Before

├── bin
├── cmd
│   ├── agent
│   │   └── app
│   ├── benchmark
│   └── dogstatsd
└── pkg
    ├── aggregator
    ├── check
    ├── checks
    │   └── system
    ├── collector
    │   └── check
    │       └── py
    │           ├── dist
    │           │   └── checks
    │           │   └── conf.d
    │           └── tests
    ├── dogstatsd
    ├── loader
    ├── py
    │   ├── dist
    │   │   ├── checks
    │   │   └── conf.d
    │   └── tests
    └── util

After

├── bin
├── cmd
│   ├── agent
│   │   └── app
│   ├── benchmark
│   └── dogstatsd
└── pkg
    ├── aggregator
    ├── collector
    │   ├── check
    │   │   ├── core
    │   │   │   └── system
    │   │   └── py
    │   │       ├── dist
    │   │       │   ├── checks
    │   │       │   └── conf.d
    │   │       └── tests
    │   └── loader
    ├── dogstatsd
    └── util

[hkaj]

according to the layout in the description shouldn't this be in pkg/collector instead?

[masci]

Collector is not a package right now, only a folder containing packages related to collector's functionalities.
core is meant to be a set of checks, the concept is symmetric to having a python set of checks. That is the loader specific to checks of type core that's why belongs to the core package.
Pinging @olivielpeau here to have confirmation of the above.

[hkaj]

Ah yeah that makes sense.

[hkaj]

LGTM