When Fedora went to BTRFS as a default, we lost the LVM based image to
run LVM resize tests with.
This PR introduces the `install_lvm.pm` installation test that creates
an LVM based qcow2 image to be used by follow-up tests.
On ppc64le it looks like this test is often failing because it
takes a second or two to update the partition list after we
click update settings, but we're not waiting for that, so we
wind up clicking in the wrong place because we match the next
partition needle before the list is refreshed but click after
it's refreshed. Let's hope these waits solve it.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
