For some reason `python3-Fabric` package exists in Tumbleweed even though
Fabric itself does not support Python 3.

https://software.opensuse.org/package/python3-Fabric

The only valid package should be `python3-Fabric.

Running `fab` on openSUSE Tumbleweed does not work when using `python3-Fabric`
package.

Steps to reproduce:
```
zypper install python3-Fabric
fab
```

Actual Results:
Python error because of Python3 incompatibility. 

```
from operator import isMappingType
ImportError: cannot import name 'isMappingType'
```


Expected Results:
Should display fabric default output instead.

Additional Information:
Should only be available as `python2-Fabric` and that should be a default `fab`
command executable.