tests: Try harder to fix libvirt

Tests failed previously with:
libvirt: XML-RPC error : Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory

related: rhbz#1950634

(cherry picked from commit b004c17388)

tests/basic-test.sh

@@ -6,5 +6,8 @@ set -x
 # virt-v2v is extensively tested on real guests by the QE
 # team using a mix of automated and manual testing.
 
+# Fix libvirt.
+systemctl restart libvirtd
+
 virt-builder fedora-30
 virt-v2v -i disk fedora-30.img -o null

tests/tests.yml

@@ -6,6 +6,7 @@
     required_packages:
     - virt-v2v
     - guestfs-tools
+    - libvirt-daemon-kvm
     tests:
     - simple:
         dir: .