+++ This bug was initially created as a clone of Bug #1905430 +++

Description of problem:
Noticed that MCO 4.6 e2e-gcp-op ci failing because of extensions test failure.
After analyzing logs and running it locally, it seems usbguard doesn't have required dependency available.

# rpm-ostree install usbguard 
Checking out tree d9bad68... done
Enabled rpm-md repositories: coreos-extensions
rpm-md repo 'coreos-extensions' (cached); generated: 2020-12-02T02:33:44Z
Importing rpm-md... done
Resolving dependencies... done
error: Could not depsolve transaction; 1 problem detected:
 Problem: conflicting requests
  - nothing provides libprotobuf.so.15()(64bit) needed by usbguard-0.7.4-4.el8.x86_64


Although, I have noticed that dependencies shipped in m-o-c extensions/dependencies/ dir has protobuf-3.6.1-4.el8ost.x86_64.rpm but this package provides incompatible lib libprotobuf.so.17 

We would need to tag in correct dpes or update usbguard package.


Version-Release number of selected component (if applicable): OCP 4.6


How reproducible:

Always in recent 4.6 MCO gcp-op tes. recnt job - https://prow.ci.openshift.org/view/gs/origin-ci-test/pr-logs/pull/openshift_machine-config-operator/2289/pull-ci-openshift-machine-config-operator-release-4.6-e2e-gcp-op/1335894493852864512

--- Additional comment from Sinny Kumari on 2020-12-08 10:51:28 UTC ---

Setting priority to high as it impacts MCO ci test and will block any PR merge in 4.6

--- Additional comment from Micah Abbott on 2020-12-08 14:50:39 UTC ---

The RHAOS 4.6 repo has a newer version of `protobuf` tagged into it, which is being selected when we download the extensions and dependencies.  We recently split the download of extension and dependencies, so we are getting different behavior.

If I do `dnf install usbguard` on a RHEL8 system with the same repos enabled that we used to build RHCOS, I get the correct version of `protobuf`

```
$ sudo dnf install usbguard
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Repository 'art-rhaos-4.6' is missing name in configuration, using id.
Repository 'rhel-8-baseos' is missing name in configuration, using id.
Repository 'rhel-8-appstream' is missing name in configuration, using id.
Repository 'rhel-8-nfv' is missing name in configuration, using id.
art-rhaos-4.6                                                                                                                                                                                                                                                                                 4.6 MB/s | 2.7 MB     00:00    
Last metadata expiration check: 0:00:01 ago on Tue 08 Dec 2020 09:44:23 AM EST.
Dependencies resolved.
==============================================================================================================================================================================================================================================================================================================================
 Package                                                                    Architecture                                                             Version                                                                         Repository                                                                          Size
==============================================================================================================================================================================================================================================================================================================================
Installing:
 usbguard                                                                   x86_64                                                                   0.7.4-4.el8                                                                     rhel-8-appstream                                                                   477 k
Installing dependencies:
 libqb                                                                      x86_64                                                                   1.0.3-10.el8                                                                    rhel-8-baseos                                                                      113 k
 protobuf                                                                   x86_64                                                                   3.5.0-7.el8                                                                     rhel-8-appstream                                                                   895 k

Transaction Summary
==============================================================================================================================================================================================================================================================================================================================
Install  3 Packages
```

If I just do `dnf install protobuf`, I get the newer version that is incompatible.

```
$ sudo dnf install protobuf
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Repository 'art-rhaos-4.6' is missing name in configuration, using id.
Repository 'rhel-8-baseos' is missing name in configuration, using id.
Repository 'rhel-8-appstream' is missing name in configuration, using id.
Repository 'rhel-8-nfv' is missing name in configuration, using id.
Last metadata expiration check: 0:00:23 ago on Tue 08 Dec 2020 09:44:23 AM EST.
Dependencies resolved.
==============================================================================================================================================================================================================================================================================================================================
 Package                                                                          Architecture                                                           Version                                                                          Repository                                                                     Size
==============================================================================================================================================================================================================================================================================================================================
Installing:
 protobuf                                                                         x86_64                                                                 3.6.1-4.el8ost                                                                   art-rhaos-4.6                                                                 915 k
Installing dependencies:
 emacs-filesystem                                                                 noarch                                                                 1:26.1-5.el8                                                                     rhel-8-baseos                                                                  69 k

Transaction Summary
==============================================================================================================================================================================================================================================================================================================================
Install  2 Packages
```

We should be able to exclude `protobuf` from the RHAOS 4.6 repo definition, which should address this.