Rename the LTIModuleDescriptor to LTIDescriptor to follow convention

common/lib/xmodule/setup.py

@@ -39,7 +39,7 @@ XMODULES = [
     "hidden = xmodule.hidden_module:HiddenDescriptor",
     "raw = xmodule.raw_module:RawDescriptor",
     "crowdsource_hinter = xmodule.crowdsource_hinter:CrowdsourceHinterDescriptor",
-    "lti = xmodule.lti_module:LTIModuleDescriptor",
+    "lti = xmodule.lti_module:LTIDescriptor",
 ]
 
 setup(

common/lib/xmodule/xmodule/lti_module.py

@@ -302,7 +302,7 @@ oauth_consumer_key="", oauth_signature="frVp4JuvT1mVXlxktiAUjQ7%2F1cw%3D"'}
         return params
 
 
-class LTIModuleDescriptor(LTIFields, MetadataOnlyEditingDescriptor, EmptyDataRawDescriptor):
+class LTIDescriptor(LTIFields, MetadataOnlyEditingDescriptor, EmptyDataRawDescriptor):
     """
     Descriptor for LTI Xmodule.
     """