libvirt: Catch VIR_ERR_NO_DOMAIN in list_instances

Commit 25f50d9a didn't catch the exact exception for
looking up deleted domain.

Partly fixes LP Bug #1032741.

Change-Id: I6c6f7d8a736c833488b6cb8e00530dc4138f1424
Reverse compare arguments in filters tests

When using assertEqual, the expected result should actually be the first
argument so any failures have 'expected' and 'actual' values printed
properly.

Change-Id: I34d16f298eb0bf62e2abaaf31e80911fa124dc24
Merge "Reverse compare arguments in filters tests"
Merge "libvirt: Catch VIR_ERR_NO_DOMAIN in list_instances"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp