virt-who config upgrade duplicate config issue fix

[yanpliu]

when the virt-who upgrade tests failed for some issues, delete virt-who config will failed, then rerun the upgrade testing, it will create another virt-who config in other org, but when list or check info the config, it will list the first virt-who config.

Use auto name to fix it.
Test Case: PASS

(robottelo_vv_615) [root@dell-per740-68-vm-05 robottelo]# pytest ./tests/upgrades/test_virtwho.py  -m pre_upgrade --disable-pytest-warnings -q
.                                                                                                                                                                                                                                      [100%]
1 passed, 1 deselected, 20 warnings in 188.91s (0:03:08)
(robottelo_vv_615) [root@dell-per740-68-vm-05 robottelo]# pytest ./tests/upgrades/test_virtwho.py  -m post_upgrade --disable-pytest-warnings -q
.                                                                                                                                                                                                                                      [100%]
1 passed, 1 deselected, 12 warnings in 136.32s (0:02:16)

[lhellebr]

Code-wise ~LGTM but there are CQ failures (failed on setup so I reran them for you) and PRT hasn't run yet (so you should run it).

[yanpliu]

Code-wise ~LGTM but there are CQ failures (failed on setup so I reran them for you) and PRT hasn't run yet (so you should run it).

@lhellebr I have rerun the jobs, but they all failed for "ERROR: No matching distribution found for ssh2-python (unavailable)"