Envoy reader use session and fixate loading the store from HA upon init.

[mnederlof]

• Force loading the store from home assistant, when called from HA

  When testing it makes sense to store a token in self.data (to prevent fetching a new token, thus causing too many installer sessions on the envoy). Since tokens are stored in HA, we should keep using this token, eventhough we might have configured something else in envoy_reader.py

• Lets not send the auth_header every time, and use the cookie's session id

  Not sure if the auth header calls entrez every time, but since we're already authenticated, it would make sense to not send the bearer token on every request.

[mnederlof]

I've been running this cookie thing for a while now, have not noticed any issues with it. (also, if the cookie is empty, it will keep sending the auth bearer tokens)

[vincentwolsink]

According to the Enphase docs the Authorization Bearer header is the way to authenticate. But since they made a mess out of this authentication thing we might aswel try cookie only. But does it hurt to do both?