Merge branch 'fix-lb-run' into 'master'

Use os_id function from the right LbPlatformUtils module and fix formatting

See merge request !279

LbConfiguration/python/LbConfiguration/SP2/script.py

@@ -696,12 +696,13 @@ class LbRun(xenv.Script):
         if self.opts.platform.lower() == 'best':
             self.opts.platform = self._findBestPlatform()
         elif not supported(self.opts.platform):
+            import LbPlatformUtils.inspect
             msg = ('current host does not support platform {0} '
                    '(dirac_platform: {1}').format(self.opts.platform,
                                                   HOST_PLATFORM)
-            os_id = LbPlatformUtils.os_id()
+            os_id = LbPlatformUtils.inspect.os_id()
             if not HOST_PLATFORM.startswith(os_id):
-                msg += 'os_id: {2}'.format(os_id)
+                msg += 'os_id: {0}'.format(os_id)
             msg += ')'
             logger = (self.log.warning
                       if self.opts.force_platform else self.log.error)