sync: remove sync WaitGroup, it's stopped with context
sync: onDemand will always try to sync newest image when a tag is used
if a digest is used then onDemand will serve local image
test(sync): fix flaky coverage in sync package
closes#1294
Signed-off-by: Petu Eusebiu <peusebiu@cisco.com>
Thanks @jdolitsky et al for kicking off these changes at:
https://github.com/oci-playground/zot/commits/main
Thanks @sudo-bmitch for reviewing the patch
Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>