get_virsh_list fix in euservice.py, it does not return the correct output of the running instance list

previous output:
```
In [59]: print vms
[{'state': 'running', 'id': '9', 'name': 'i-B3C040F2'}, {'state': 'running', 'id': '9', 'name': 'i-B3C040F2'}, {'state': 'running', 'id': '9', 'name': 'i-B3C040F2'}, {'state': 'running', 'id': '10', 'name': 'i-D4C03E38'}, {'state': 'running', 'id': '10', 'name': 'i-D4C03E38'}, {'state': 'running', 'id': '10', 'name': 'i-D4C03E38'}]
```

After removing for-loop, the duplicates are gone,
```
In [12]: print vms
[{'state': 'running', 'id': '9', 'name': 'i-B3C040F2'}, {'state': 'running', 'id': '10', 'name': 'i-D4C03E38'}]
```