br/pkg/storage: s3 sdk support to access aliyun oss by ram type

[knull-cn]

Feature Request

Is your feature request related to a problem? Please describe:

no Describe the feature you'd like:

use s3 sdk, access aliyun oss by ram type: on ram ecs, can auto request the sts token ,then use sts token to access oss. Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

the doc at aliyun , example for python : 基于临时凭证，使用Python SDK访问OSS

[kennytm]

@knull-cn The implementation #34309 for this will cause all tools (Dumpling, Lightning, BR) running on Aliyun ECS using OSS as storage to ignore AK/SK defined in environment variables and ~/.aws/credentials. This is

1. undocumented
2. inconsistent with the credential chain for AWS which follows the environment → file → IAM role load order

Please check if this is intentional.

[knull-cn]

@knull-cn The implementation #34309 for this will cause all tools (Dumpling, Lightning, BR) running on Aliyun ECS using OSS as storage to ignore AK/SK defined in environment variables and ~/.aws/credentials. This is

1. undocumented
2. inconsistent with the credential chain for AWS which follows the environment → file → IAM role load order

Please check if this is intentional.

the load order is wrong , this is not intentional the RD member will reconstruct and fix this bug

[seiya-annie]

/found community