Package Errors:
- add function to check & cast error interface into golib Error interface
- update CodeError type to simplify management & error creation
- add function to simplify call of Error function from a generic error interface
- remove some useless function from Error interface
All Other Packages:
- apply change of package Errors into all other packages
- Bucket ADD CreateWithLock : create bucket with Object Lock enable
- Bucket ADD GetLock : retrieve object lock bucket configuration
- Bucket ADD SetLock : set object lock bucket configuration
- Object ADD GetLegalHold : retrieve object lock status for object/version
- Object ADD SetLegalHold : set object lock flag for object/version
- Interface ADD SetClientS3 : replace current client S3 with a new one given as parameters
- Interface ADD SetClientIam : replace current client IAM with a new one given as parameters
- Interface ADD HTTPCli : return the current setting of func to return a http.client
- Interface ADD mutex : lock any accessing struct properties to prevent race
Other :
- bump dependencies
