/var/cache/pulp should not be required by pulp workers
CLOSED - CURRENTRELEASE
In Pulp 2, /var/cache/pulp was used by workers to create symlinks before copying them to /var/lib/pulp. Since Pulp 3 is not going to be creating symlinks all the time, it's reasonable to believe that workers can use /var/lib/pulp/tmp as the root of their working directories.
We should switch the code that provides the working directory for a worker to return /var/lib/pulp/tmp/<workername>
The Artifact upload API already uses /var/lib/pulp/tmp as the temporary storage.
Drop creation of the /var/cache/pulp directory
ref #3406 https://pulp.plan.io/issues/3406