After debugging for issue of missing some http message logs, we found out that swagger client configuration will be re-initiated by calling models in swagger client, so in API python tests, defination for models must be in front of swagger client defination.
Signed-off-by: danfengliu <danfengl@vmware.com>
1. Add 7 API python test scripts for tag immutability;
2. Swagger file has object struct defination issue on imuutability policy rule, because
this policy is in shared with retention rule, therefore, they should be unified to
the same type of rule;
3. Fixed a timeout issue of action keyword, waiting for a long period;
4. Add API test scripts for scan signed image.
Signed-off-by: danfengliu <danfengl@vmware.com>