Added autodoc for celery.execute.trace to the internal API reference.

docs/internals/reference/celery.execute.trace.rst

@@ -0,0 +1,8 @@
+==========================================
+ Tracing Execution - celery.execute.trace
+==========================================
+
+.. currentmodule:: celery.execute.trace
+
+.. automodule:: celery.execute.trace
+    :members:

docs/internals/reference/index.rst

@@ -27,6 +27,7 @@
     celery.backends.mongodb
     celery.backends.redis
     celery.backends.tyrant
+    celery.execute.trace
     celery.datastructures
     celery.log
     celery.utils