Comment 0 for bug 1804216

At the fedora28 standalone job that uses centos-7 docker images we have the following error at noop review:
http://logs.openstack.org/45/560445/199/check/tripleo-ci-fedora-28-standalone/f515752/logs/undercloud/home/zuul/standalone_deploy.log.txt.gz#_2018-11-20_08_46_18

3f20dba9b9f52d35e9b0143966208e986\\n\\r 0 B / 658 B \\r 658 B / 658 B 0s\\nCopying blob sha256:d80ce32896f73eeea378eb0ad02996695139ac78d486fb0f377535fcfc2afba3\\n\\r 0 B / 474 B \\r 474 B / 474 B 0s\\nCopying config sha256:2863e03ec7ada670a0826966f461263604a1719a3f8f56a7c69896b17bcb2543\\n\\r 0 B / 26.35 KB \\r 26.35 KB / 26.35 KB 0s\\nWriting manifest to image destination\\nStoring signatures\\npanic: runtime error: invalid memory address or nil pointer dereference\\n[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xc49a97]\

The hashes are the following:
centos-7:current-tripleo:3ed8ac0e93367a02ad53d9fa93467057724b6621_fd8eb74b
fedora-28:current-tripleo:9d86a14fa555e87e555aa43bc09160055d2821d4_9b470851
fedora-28:latest:5ff37f10280639737527226ca4bd97919d3725ea_4d4946bc