Merge pull request #4709 from wangshiqi308/master

...uaweicloud-sdk-go-v3/core/auth/basic/basic_icredential.go

...cloud/huaweicloud-sdk-go-v3/core/auth/cache/auth_cache.go

...ud/huaweicloud-sdk-go-v3/core/auth/env/env_icredential.go

...weicloud-sdk-go-v3/core/auth/global/global_icredential.go

...icloud/huaweicloud-sdk-go-v3/core/auth/iam/iam_service.go

...uaweicloud/huaweicloud-sdk-go-v3/core/auth/icredential.go

...weicloud/huaweicloud-sdk-go-v3/core/auth/signer/signer.go

...weicloud/huaweicloud-sdk-go-v3/core/config/http_config.go

...icloud/huaweicloud-sdk-go-v3/core/converter/converters.go

...vider/huaweicloud/huaweicloud-sdk-go-v3/core/def/field.go

...r/huaweicloud/huaweicloud-sdk-go-v3/core/def/multipart.go

.../huaweicloud/huaweicloud-sdk-go-v3/core/hc_http_client.go

...loud/huaweicloud-sdk-go-v3/core/hc_http_client_builder.go

...ud/huaweicloud-sdk-go-v3/core/httphandler/http_handler.go

...ud/huaweicloud-sdk-go-v3/core/impl/default_http_client.go

...r/huaweicloud/huaweicloud-sdk-go-v3/core/region/region.go

...uaweicloud-sdk-go-v3/core/request/default_http_request.go

...er/huaweicloud/huaweicloud-sdk-go-v3/core/sdkerr/types.go

...uaweicloud/huaweicloud-sdk-go-v3/core/sdktime/sdk_time.go

...uaweicloud/huaweicloud-sdk-go-v3/core/utils/json_utils.go