Description of problem:
Current implementation of 'rhui-manager cert upload' and corresponding interactive command of rhui-manager (home -> [n] -> [u] ...) look broken due to incompatibilities in rebased version of pulp RHUI v3 using and cannot update all of necessary certs correctly.

It's my understanding that these commands only update the cert in /etc/pki/rhui/redhat/ and does not update client cert and key of each Red Hat RPM repos saved in /var/lib/rhui/remote_share/<repo_id>_yum_importer/pki/. As a result, each repos' importer will fail to sync contents from the Red Hat CDN after updating the (content) cert.

Version-Release number of selected component (if applicable): rh-rhui-tools-libs-3.0.1-3.el7ui

How reproducible: Always, I think.

Steps to Reproduce:
1. Update the RHUI entitlement (content) cert with using 'rhui-manager cert upload' command or its interactive shell command
2. Check the timestamp of /etc/pki/rhui/redhat/*.pem and /var/lib/rhui/remote_share/<repo_id>_yum_importer/pki/client{.cert,key}, and/or try to sync some of repos.

Actual results: Client certs of each repo importers are not updated and it fails to sync repos.

Expected results: Client certs of each repo importers are updated along with the master cert in /etc/pki/rhui/redhat/, and it succeeds to sync repos.

Additional info:
I'll attach a couple of experimental patches taking a little bit different approaches should resolve this issue.