Artom Lifshitz 2b3cc2d891 Factor out get_server_xml()
Getting an instance's libvirt XML is a common operation in all tests.
Create a helper for it.

Change-Id: Ib1897cf683c205b1e283a69f6687c7d833fa53ff
2019-01-29 11:45:53 -05:00
..
2019-01-29 11:45:53 -05:00