Add Ubuntu Minimal cloud image

Change-Id: Ife0dd7c9a5b0a86a8bc350e4cca6ccee849f423a

tobiko/openstack/stacks/__init__.py

@@ -76,7 +76,9 @@ AntiAffinityServerGroupStackFixture = _nova.AntiAffinityServerGroupStackFixture
 
 UbuntuFlavorStackFixture = _ubuntu.UbuntuFlavorStackFixture
 UbuntuImageFixture = _ubuntu.UbuntuImageFixture
+UbuntuMinimalImageFixture = _ubuntu.UbuntuMinimalImageFixture
 UbuntuServerStackFixture = _ubuntu.UbuntuServerStackFixture
+UbuntuMinimalServerStackFixture = _ubuntu.UbuntuMinimalServerStackFixture
 
 OctaviaLoadbalancerStackFixture = _octavia.OctaviaLoadbalancerStackFixture
 OctaviaListenerStackFixture = _octavia.OctaviaListenerStackFixture

tobiko/openstack/stacks/_ubuntu.py

@@ -26,6 +26,13 @@ UBUNTU_IMAGE_URL = (
     f'http://cloud-images.ubuntu.com/{UBUNTU_IMAGE_VERSION}/current/'
     f'{UBUNTU_IMAGE_VERSION}-server-cloudimg-amd64.img')
 
+UBUNTU_IMAGE_VERSION_NUMBER = '20.04'
+
+UBUNTU_MINIMAL_IMAGE_URL = (
+    'https://cloud-images.ubuntu.com/minimal/releases/'
+    f'{UBUNTU_IMAGE_VERSION}/release/'
+    f'ubuntu-{UBUNTU_IMAGE_VERSION_NUMBER}-minimal-cloudimg-amd64.img')
+
 
 class UbuntuImageFixture(glance.URLGlanceImageFixture):
     image_url = CONF.tobiko.ubuntu.image_url or UBUNTU_IMAGE_URL
@@ -38,10 +45,18 @@ class UbuntuImageFixture(glance.URLGlanceImageFixture):
     connection_timeout = CONF.tobiko.ubuntu.connection_timeout or 600.
 
 
+class UbuntuMinimalImageFixture(UbuntuImageFixture):
+    image_url = UBUNTU_MINIMAL_IMAGE_URL
+
+
 class UbuntuFlavorStackFixture(_nova.FlavorStackFixture):
     ram = 256
 
 
+class UbuntuMinimalFlavorStackFixture(_nova.FlavorStackFixture):
+    ram = 128
+
+
 class UbuntuServerStackFixture(_nova.ServerStackFixture):
 
     #: Glance image used to create a Nova server instance
@@ -52,3 +67,16 @@ class UbuntuServerStackFixture(_nova.ServerStackFixture):
 
     #: Setup SWAP file in bytes
     swap_maxsize = 1 * 1024 * 1024 * 1024  # 1 GB
+
+
+class UbuntuMinimalServerStackFixture(UbuntuServerStackFixture):
+
+    #: Glance image used to create a Nova server instance
+    image_fixture = tobiko.required_setup_fixture(UbuntuMinimalImageFixture)
+
+    #: Flavor used to create a Nova server instance
+    flavor_stack = tobiko.required_setup_fixture(
+        UbuntuMinimalFlavorStackFixture)
+
+    #: Setup SWAP file in bytes
+    swap_maxsize = 512 * 1024 * 1024  # 500 MB

tobiko/tests/functional/openstack/stacks/test_ubuntu.py

@@ -15,6 +15,8 @@
 #    under the License.
 from __future__ import absolute_import
 
+import pytest
+
 import tobiko
 from tobiko.shell import sh
 from tobiko.openstack import stacks
@@ -34,3 +36,21 @@ class UbuntuServerStackTest(test_cirros.CirrosServerStackTest):
                                     ssh_client=self.stack.ssh_client).stdout
         self.assertTrue(python_version.startswith('Python 3.'),
                         python_version)
+
+
+class UbuntuMinimalServerStackTest(UbuntuServerStackTest):
+
+    #: Stack of resources with a server attached to a floating IP
+    stack = tobiko.required_setup_fixture(
+        stacks.UbuntuMinimalServerStackFixture)
+
+    @pytest.mark.skip(reason="ping not installed on image")
+    def test_ping_fixed_ipv4(self):
+        pass
+
+    @pytest.mark.skip(reason="ping not installed on image")
+    def test_ping_fixed_ipv6(self):
+        pass
+
+    def _test_ping_nameservers(self, ip_version: int):
+        self.skipTest("ping not installed on Ubuntu minimal image")