tests: Add basic integration testing

Add basic integration testing of the hypervisor using a cloud-init to
configure the VM at boot and SSH to control it at runtime.

Initial test just boots the VM up checks some basic resources and
reboots. With a second test that calls into the first to check that
subsequent tests work correctly.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

test_data/cloud-init/openstack/latest/meta_data.json

@@ -0,0 +1,3 @@
+{
+  "hostname" : "cloud"
+}

test_data/cloud-init/openstack/latest/user_data

@@ -0,0 +1,17 @@
+#cloud-config
+users:
+  - name: admin
+    passwd: $6$7125787751a8d18a$sHwGySomUA1PawiNFWVCKYQN.Ec.Wzz0JtPPL1MvzFrkwmop2dq7.4CYf03A5oemPQ4pOFCCrtCelvFBEle/K.
+    sudo:
+      - ALL=(ALL) NOPASSWD:ALL
+write_files:
+  -
+    path: /etc/systemd/network/00-static.network
+    permissions: 0644
+    content: |
+        [Match]
+        Name=en*
+
+        [Network]
+        Address=192.168.2.2/24
+        Gateway=192.168.2.1