Add a provider for Key Value (KV) Store in Traefik v2

[SantoDE]

Do you want to request a feature or report a bug?

Feature

What did you expect to see?

Traefik v1 supports dynamic config generation for and from a Key Value Store, i.e. it has a kv provider.

Now that the main changes for v2 are out, we can re-add previously supported providers, such as the one for Key Value Stores.

The existing providers, can be used for inspiration.

[lokeshpeta]

when can we expect this feature?

[bradjones1]

See #5426

[lokeshpeta]

Oh good. Thanks very much.

[dduportal]

Hi @bradjones1 @lokeshpeta , for information, Traefik v2.0 only drops the "HA" part as explained in #5426
But the provider "KV", which allows dynamic configuration of Traefik to be stored in KV systems as etcd, consul, etc. is still an upcoming feature.