Parallelize image mirroring and reuse mounted layers#19017

Merged

openshift-merge-robot merged 2 commits intoopenshift:masterfrom smarterclayton:plan

Mar 30, 2018

+1,769-638

Commits on Mar 22, 2018

UPSTREAM: docker/distribution: 2382: Don't double add scopes
smarterclayton
committed

Commits on Mar 23, 2018

Mirroring should take advantage of mount opportunities for binaries
smarterclayton
committed