old_contents: from .alexa import alexa_malware_scan
  from .web_api import wot_malware_scan
  from .fake import fake_scanner
  from .capture_hpc import chpc_malware_scan
  
  scanners = (chpc_malware_scan,)
  heavy_scanners = (chpc_malware_scan,)
  
new_contents: from .alexa import alexa_malware_scan
  from .web_api import wot_malware_scan
  from .fake import fake_scanner
  from .clamav_html import crawl_html
  from .capture_hpc import chpc_malware_scan
  
  scanners = (chpc_malware_scan, crawl_html)
  heavy_scanners = (chpc_malware_scan, crawl_html)
  
subject: add clamav scanner as a scanner