Description of problem:

Importing CV version from exported tar breaks things as below:
```

1. hammer -u admin -p passwd content-view version import --export-tar abc/export-5.tar --organization-id 5
   [................................................................................................] [100%]
   No new packages.
   Error: RPM1004: Error retrieving metadata: [Errno 2] No such file or directory: '//abc/export-5/puppetOrg/content_views/puppetCV/2.0/custom/yumProd/yumRepo/repodata/repomd.xml'
   Could not import the content view.:
   bear-4.1-1.noarch.rpm not available in repository yumRepo
   ```

Version-Release number of selected component (if applicable):
Satellite 6.5.0 snap 7

How reproducible:
Always

Steps to Reproduce:
1. Create Product with yum repository contents.
2. Create CV, add above product to the CV.
3. Publish the CV
4. Export the above CV version.
5. Attempt to import the CV version contents from the exported directory.
```

1. hammer -u admin -p passwd content-view version import --export-tar abc/export-5.tar --organization-id 5
   ```

Actual results:
Import fails with Permission denied error:
```
Error: RPM1004: Error retrieving metadata: [Errno 2] No such file or directory: '//abc/export-5/puppetOrg/content_views/puppetCV/2.0/custom/yumProd/yumRepo/repodata/repomd.xml'
Could not import the content view.:
bear-4.1-1.noarch.rpm not available in repository yumRepo

```

Expected results:
Import of Content View version should be successful.

Additional info: