Entity annotation includes "human_name" key that is never configured on entities

Problem/Motivation

src/Entity/EnvironmentIndicator.php includes the entity keys in the annotation:

```
* entity_keys = {
* "id" = "machine",
* "label" = "human_name",
* "weight" = "weight"
* },
```

`human_name` isn't a key used anywhere else, including in the config_export object in the same annotation. I think this should be `name`.

Modules that use config annotations, like config_sync, throw Exceptions because the key identified as the key identified as the label in the Entity annotation does not exist on actual config objects. Besides which, `EnvironmentIndicator::label()` gets the `name` property.

In effect, config_sync is looking for what key to use for the label of the config entity by looking at the entity_keys definition, then not being able to find that key on any config and erroring.

Not so easy to reproduce, but easy to fix.

Proposed resolution

set "label"="name" in the entity annotation