* refactor openpitrix API
Signed-off-by: Nhongming <talonwan@yunify.com>

* add openpitrix mock client
Signed-off-by: Nhongming <talonwan@yunify.com>

* refactor tenant API
Signed-off-by: Nhongming <talonwan@yunify.com>

* refactor IAM API
Signed-off-by: Nhongming <talonwan@yunify.com>

* refactor IAM API
Signed-off-by: Nhongming <talonwan@yunify.com>