Fixes failures like the following with rhel 8.3 in octopus
```
2021-08-03T17:32:19.328 INFO:tasks.workunit.client.0.smithi148.stdout:No match for argument: libarchive-3.3.3
2021-08-03T17:32:19.338 INFO:tasks.workunit.client.0.smithi148.stderr:Error: Unable to find a match: libarchive-3.3.3
2021-08-03T17:32:19.376 DEBUG:teuthology.orchestra.run:got remote process result: 1
2021-08-03T17:32:19.377 INFO:tasks.workunit:Stopping ['rados/test_envlibrados_for_rocksdb.sh'] on client.0...
```
Follow-up to https://github.com/ceph/ceph/pull/42421