Add ability to use |success and |failed as Jinja2 filters.

Example:

when: registered_variable|failed

CHANGELOG.md

@@ -25,6 +25,8 @@ Core Features:
 * external inventory script added for Spacewalk / Red Hat Satellite servers
 * It is now possible to feed JSON structures to --extra-vars.  Pass in a JSON dictionary/hash to feed in complex data.
 * group_vars/ and host_vars/ directories can now be kept alongside the playbook as well as inventory (or both!)
+* more filters: ability to say {{ foo|success }} and {{ foo|failed }} and when: foo|success and when: foo|failed
+* more filters: {{ path|basename }} and {{ path|dirname }}
 
 Modules added:
 
@@ -64,7 +66,6 @@ Modules removed
 
 * vagrant -- can't be compatible with both versions at once, just run things though the vagrant provisioner in vagrant core
 
-
 Bugfixes and Misc Changes:
 
 * service module happier if only enabled=yes|no specified and no state

lib/ansible/runner/filter_plugins/core.py

@@ -19,6 +19,7 @@ import base64
 import json
 import os.path
 import yaml
+from ansible import errors
 
 def to_nice_yaml(*a, **kw):
     '''Make verbose, human readable yaml'''
@@ -28,6 +29,20 @@ def to_nice_json(*a, **kw):
     '''Make verbose, human readable JSON'''
     return json.dumps(*a, indent=4, sort_keys=True, **kw)
 
+def failed(*a, **kw):
+    item = a[0] 
+    if type(item) != dict:
+       raise errors.AnsibleError("|failed expects a dictionary")
+    rc = item.get('rc',0)
+    failed = item.get('failed',False)
+    if rc != 0 or failed:
+       return True
+    else:
+       return False
+
+def success(*a, **kw):
+    return not failed(*a, **kw)
+
 class FilterModule(object):
     ''' Ansible core jinja2 filters '''
 
@@ -50,5 +65,10 @@ class FilterModule(object):
             # path
             'basename': os.path.basename,
             'dirname': os.path.dirname,
+
+            # failure testing
+            'failed'  : failed,
+            'success' : success,
+
         }