Description of problem:
At present, we only support scanning CVE for container/container image by atomic scan. But in some fields such as financial services, security is very important, customers probably also want to use AV(Anti Virus) for scanning containers/containers image to defect system security. 

Version-Release number of selected component (if applicable):
# rpm -q atomic docker
atomic-1.9-4.gitff44c6a.el7.x86_64
docker-1.9.1-28.el7.x86_64


How reproducible:
always.

Steps to Reproduce:
1. There is no available AV container images in our public docker registry

Actual results:
Can't scan viruses of container/container image

Expected results:


Additional info:

Maybe, we can build a clamd container image and also need to implement a AV client in atomic cmdline, such as atomic scan --av=clamd (--no-cve) or atomic av --driver=clamd, etc.