This is so jobs-api will start using them. This is one more step towards elimination the differences between webservice and jobs-api.

• this would require refactoring jobs-api so that if image is not found, resolve to closest variant. e.g.: docker-registry.tools.wmflabs.org/toolforge-golang111-sssd-web ---> resolved to ---> docker-registry.tools.wmflabs.org/toolforge-golang111-sssd-base and vice versa. This is so we can keep resolving jobs-framework variant images, even after we've switched to using webservice variant images in the image-config. After the change in image-config, we'll want to continue resolving images like. See T409191 for context.
• replace all jobs-framework image variant with webservice image variants.