tests: Add Ubuntu 17.10 (artful) os_grains test case

Signed-off-by: Benjamin Drung <benjamin.drung@profitbricks.com>

tests/unit/grains/os-releases/ubuntu-17.10

@@ -0,0 +1,13 @@
+# Taken from base-files 9.6ubuntu102
+NAME="Ubuntu"
+VERSION="17.10 (Artful Aardvark)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 17.10"
+VERSION_ID="17.10"
+HOME_URL="https://www.ubuntu.com/"
+SUPPORT_URL="https://help.ubuntu.com/"
+BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
+PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
+VERSION_CODENAME=artful
+UBUNTU_CODENAME=artful

tests/unit/grains/test_core.py

@@ -405,7 +405,7 @@ PATCHLEVEL = 3
         self._run_suse_os_grains_tests(_os_release_map)
 
     @skipIf(not salt.utils.is_linux(), 'System is not Linux')
-    def test_ubuntu_os_grains(self):
+    def test_ubuntu_xenial_os_grains(self):
         '''
         Test if OS grains are parsed correctly in Ubuntu 16.04 "Xenial Xerus"
         '''
@@ -422,6 +422,24 @@ PATCHLEVEL = 3
         }
         self._run_os_grains_tests("ubuntu-16.04", _os_release_map)
 
+    @skipIf(not salt.utils.is_linux(), 'System is not Linux')
+    def test_ubuntu_artful_os_grains(self):
+        '''
+        Test if OS grains are parsed correctly in Ubuntu 17.10 "Artful Aardvark"
+        '''
+        _os_release_map = {
+            'linux_distribution': ('Ubuntu', '17.10', 'artful'),
+            'os': 'Ubuntu',
+            'os_family': 'Debian',
+            'oscodename': 'artful',
+            'osfullname': 'Ubuntu',
+            'osrelease': '17.10',
+            'osrelease_info': [17, 10],
+            'osmajorrelease': 17,
+            'osfinger': 'Ubuntu-17.10',
+        }
+        self._run_os_grains_tests("ubuntu-17.10", _os_release_map)
+
     def test_docker_virtual(self):
         '''
         Test if OS grains are parsed correctly in Ubuntu Xenial Xerus