Fixes to the service module for Ubuntu 12.04 (LTS)

Fixes #3615
Fixes #3572

library/system/service

@@ -576,6 +576,7 @@ class LinuxService(Service):
                 action = 'enable'
             else:
                 action = 'disable'
+
             (rc, out, err) = self.execute_command("%s -n %s %s" \
                                                   % (self.enable_cmd, self.name, action))
             self.changed = False
@@ -583,6 +584,12 @@ class LinuxService(Service):
                 if line.startswith('rename'):
                     self.changed = True
                     break
+                elif self.enable and line.find('do not exist') != -1:
+                    self.changed = True
+                    break
+                elif not self.enable and line.find('already exist') != -1:
+                    self.changed = True
+                    break
 
             if self.module.check_mode:
                 self.module.exit_json(changed=self.changed)
@@ -590,7 +597,17 @@ class LinuxService(Service):
             if not self.changed:
                 return
 
-            return self.execute_command("%s %s %s" % (self.enable_cmd, self.name, action))
+            if self.enable:
+                # make sure the init.d symlinks are created 
+                # otherwise enable might not work
+                (rc, out, err) = self.execute_command("%s %s defaults" \
+                                                      % (self.enable_cmd, self.name))
+                if rc != 0:
+                    return (rc, out, err)
+
+                return self.execute_command("%s %s enable" % (self.enable_cmd, self.name))
+            else:
+                return self.execute_command("%s -f %s remove" % (self.enable_cmd, self.name))
 
         # we change argument depending on real binary used:
         # - update-rc.d and systemctl wants enable/disable