*BREAKING* Remove resin.models.environment_variables.ApplicationEnvVariable since it no longer exists in the model. Implement resin.models.environment_variables.ServiceEnvVariable model
*BREAKING* Remove resin.models.environment_variables.ApplicationEnvVariable since it no longer exists in the model.
Implement resin.models.environment_variables.ServiceEnvVariable model

Change-Type: major

resin-io/resin-sdk-python,resin-io/resin-sdk-python