layer/iterate: changes in cname loop detection process

3 jobs for fix-cname-loop in 1 minute and 46 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #1482
docker linux amd64
build:linux:amd64

00:00:29

 
  Test
passed #1484
docker linux amd64
deckard:linux:amd64

00:00:54

passed #1483
docker linux amd64
test:linux:amd64

00:00:22