Failing to delete source archive should not fail GCB builds (#5891)
Failing to delete source archive should not fail GCB builds (#5891)

* Use a UUID for the source archive rather than random values
GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold