Persistence chunks using the Cortex chunk store.

* Make promtail read all its config from a file.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Use gokit logging everywhere.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Start work to parse normal log lines.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* update common and kuberesolver.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* lint

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Get EntryParser stuff working, so we can tail raw log files.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Make sure filename label works.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* lint, remove interfacer.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Check in generated files, to make getting started easier.

Add gometalinter, and a lint check for changes to the generated files.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

* Make lint pass?

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>