tests: add tests definition file

Add very basic tests together with NM integration
 * start service
 * init db
 * add basic single ethernet two port setup
 * add bond setup
 * add vlan setup

Executing these tests:
 * nmcli_add_basic_openvswitch_configuration
 * nmcli_add_openvswitch_bond_configuration
 * nmcli_add_openvswitch_vlan_configuration
 * NM_reboot_openvswitch_vlan_configuration

from:
 https://gitlab.freedesktop.org/NetworkManager/NetworkManager-ci/blob/master/nmcli/features/ovs.feature

tests/tests.yml

@@ -0,0 +1,14 @@
+# Tests for OVS using NM's OVS tests
+- hosts: localhost
+  roles:
+  - role: standard-test-basic
+    tags:
+    - classic
+    repositories:
+    - repo: "https://gitlab.freedesktop.org/NetworkManager/NetworkManager-ci"
+      dest: "NetworkManager-ci"
+    tests:
+    - sanity-tests:
+        dir: NetworkManager-ci
+        run: run/osci/run-tests openvswitch
+