Add `SLE` module activation into `BaseSUSEMorphingTools`

Providers override `_get_sle_modules()` to declare which SLE modules are
needed.

Signed-off-by: Mihaela Balutoiu <mbalutoiu@cloudbasesolutions.com>

coriolis/osmorphing/suse.py

@@ -127,6 +127,23 @@ class BaseSUSEMorphingTools(base.BaseLinuxOSMorphingTools):
         except Exception:
             return False
 
+    def _get_sle_modules(self):
+        return ["sle-module-public-cloud"]
+
+    def pre_packages_install(self, package_names):
+        super(BaseSUSEMorphingTools, self).pre_packages_install(package_names)
+        if package_names:
+            if self._distro == SLES_DISTRO_IDENTIFIER:
+                if self._version_supported_util(self._version, minimum=16):
+                    LOG.info(
+                        "SLES %s does not use the module system. "
+                        "Skipping module activation.", self._version)
+                else:
+                    for module in self._get_sle_modules():
+                        self._enable_sles_module(module)
+            else:
+                self._add_cloud_tools_repo()
+
     def post_packages_install(self, package_names):
         self._configure_cloud_init()
         self._run_dracut()

coriolis/tests/osmorphing/test_suse.py

@@ -373,3 +373,64 @@ class BaseSUSEMorphingToolsTestCase(test_base.CoriolisBaseTestCase):
 
         with self.assertLogs('coriolis.osmorphing.suse', level=logging.WARN):
             self.morphing_tools.uninstall_packages(self.package_names)
+
+    def test__get_sle_modules_default(self):
+        result = self.morphing_tools._get_sle_modules()
+
+        self.assertEqual(result, ["sle-module-public-cloud"])
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_enable_sles_module')
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_get_sle_modules')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, 'pre_packages_install')
+    def test_pre_packages_install_sles_old_version(
+            self, mock_super_pre, mock_get_sle_modules,
+            mock_enable_sles_module):
+        mock_get_sle_modules.return_value = ["mod1", "mod2"]
+
+        self.morphing_tools.pre_packages_install(self.package_names)
+
+        mock_super_pre.assert_called_once_with(self.package_names)
+        mock_enable_sles_module.assert_has_calls([
+            mock.call("mod1"),
+            mock.call("mod2"),
+        ])
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_enable_sles_module')
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_get_sle_modules')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, 'pre_packages_install')
+    def test_pre_packages_install_sles_16(
+            self, mock_super_pre, mock_get_sle_modules,
+            mock_enable_sles_module):
+        self.morphing_tools._version = "16"
+
+        self.morphing_tools.pre_packages_install(self.package_names)
+
+        mock_super_pre.assert_called_once_with(self.package_names)
+        mock_get_sle_modules.assert_not_called()
+        mock_enable_sles_module.assert_not_called()
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_add_cloud_tools_repo')
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_enable_sles_module')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, 'pre_packages_install')
+    def test_pre_packages_install_opensuse(
+            self, mock_super_pre, mock_enable_sles_module,
+            mock_add_cloud_tools_repo):
+        self.morphing_tools._distro = suse.OPENSUSE_DISTRO_IDENTIFIER
+
+        self.morphing_tools.pre_packages_install(self.package_names)
+
+        mock_super_pre.assert_called_once_with(self.package_names)
+        mock_add_cloud_tools_repo.assert_called_once()
+        mock_enable_sles_module.assert_not_called()
+
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_add_cloud_tools_repo')
+    @mock.patch.object(suse.BaseSUSEMorphingTools, '_enable_sles_module')
+    @mock.patch.object(base.BaseLinuxOSMorphingTools, 'pre_packages_install')
+    def test_pre_packages_install_no_packages(
+            self, mock_super_pre, mock_enable_sles_module,
+            mock_add_cloud_tools_repo):
+        self.morphing_tools.pre_packages_install([])
+
+        mock_super_pre.assert_called_once_with([])
+        mock_enable_sles_module.assert_not_called()
+        mock_add_cloud_tools_repo.assert_not_called()