Add docs for %(host_node_name)s in include=. Refs #737

Author: mnaberez

CHANGES.txt

@@ -1,6 +1,9 @@
 3.3.0 (Next 3.x Release)
 ------------------------
 
+- Glob patterns in the ``include`` section now support the ``host_node_name``
+  expansion.  Patch by Paul Lockaby.
+
 - Files included via the ``[include]`` section are now logged at the ``INFO``
   level instead of ``WARN``.  Patch by Daniel Hahler.
 

docs/configuration.rst

@@ -1099,15 +1099,19 @@ configuration.
   includes it.  A "glob" is a file pattern which matches a specified
   pattern according to the rules used by the Unix shell. No tilde
   expansion is done, but ``*``, ``?``, and character ranges expressed
-  with ``[]`` will be correctly matched.  Recursive includes from
-  included files are not supported.
+  with ``[]`` will be correctly matched.  The string expression is
+  evaluated against a dictionary that includes ``host_node_name``
+  and ``here`` (the directory of the supervisord config file).  Recursive
+  includes from included files are not supported.
 
   *Default*: No default (required)
 
   *Required*:  Yes.
 
   *Introduced*: 3.0
 
+  *Changed*: 3.3.0.  Added support for the ``host_node_name`` expansion.
+
 ``[include]`` Section Example
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~