In order to make other services that uses the S3 api to be contacted via this extension.
for example:
's3' => [
'class' => 'frostealth\yii2\aws\s3\Service',
'credentials' =>
'key' => 'My-Key',
'secret' => 'My-Secret',
],
'endpoint' => "https://myendpoint.com",
'region' => 'endpoitregion',
'defaultBucket' => 'defaultbucket',
'defaultAcl' => 'public-read',
],