Update dogpile cache to fix missing dep on decorator for U
Update dogpile cache to fix missing dep on decorator for U

It's a followup of [1] for Ussuri.

[1] https://review.rdoproject.org/r/c/rdoinfo/+/39177

Change-Id: I2e4873a73a1a3a3fa251bb5d7e21580a91853813

redhat-openstack/rdoinfo