add SLE12 support to hostname.py

lib/ansible/modules/system/hostname.py

@@ -368,6 +368,15 @@ class FedoraHostname(Hostname):
     distribution = 'Fedora'
     strategy_class = SystemdStrategy
 
+class SLESHostname(Hostname):
+    platform = 'Linux'
+    distribution = 'Suse linux enterprise server '
+    distribution_version = get_distribution_version()
+    if distribution_version and LooseVersion(distribution_version) >= LooseVersion("12"):
+        strategy_class = SystemdStrategy
+    else:
+        strategy_class = UnimplementedStrategy
+
 class OpenSUSEHostname(Hostname):
     platform = 'Linux'
     distribution = 'Opensuse '