Support Azure Storage

[yagonobre]

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[Guilhermeslucas]

Hello everyone, how are you? I'd like to take a look at it it. I just have some questions:

• The config struct is named with the Aws prefix in all the attributes. Which approach do you think would be better, to change the name to something more generic or to create another struct like AzureCofig?

type Config struct {
	Type                storageType `envconfig:"type" default:"s3"`
	AwsKey              string      `envconfig:"aws_key"`
	AwsSecret           string      `envconfig:"aws_secret"`
	AwsRegion           string      `envconfig:"aws_region"`
	AwsBucket           string      `envconfig:"aws_bucket"`
	AwsEndpoint         string      `envconfig:"aws_endpoint" default:""`
	AwsDisableSSL       bool        `envconfig:"aws_disable_ssl" default:"false"`
	AwsS3ForcePathStyle bool        `envconfig:"aws_s3_force_path_style" default:"false"`
}

• Looking at the interface that the storage providers should follow, I don't have to much context on what each of the methods should do. Can you give me a little more context on that?

type Storage interface {
	K8sSecretName() string
	AccessData() map[string][]byte
	UploadFile(path string, file io.ReadSeeker) error
	Type() string
	PodEnvVars() map[string]string
	List(path string) ([]*Object, error)
	Delete(path string) error
}

Thanks a lot!