add test for ansible installation

Author: tknerr

spec/test_ansible.py

@@ -0,0 +1,12 @@
+
+def test_ansible_is_installed_at_version_2_9_6_(host):
+    cmd = host.run("pip3 show --disable-pip-version-check ansible")
+    assert cmd.rc is 0
+    assert "Name: ansible\nVersion: 2.9.6" in cmd.stdout
+
+def test_ansible_commands_are_found_(host):
+    assert host.run('which ansible').rc is 0
+    assert host.run('which ansible-playbook').rc is 0
+
+def test_ansible_version_command_reports_version_2_9_6_(host):
+    assert '2.9.6' in host.run('ansible --version').stdout