enforce required config

(cherry picked from commit cbedbd3c9c)
(cherry picked from commit bcabbe33c8)

lib/ansible/config/manager.py

@@ -343,6 +343,15 @@ class ConfigManager(object):
 
             # set default if we got here w/o a value
             if value is None:
+                if defs[config].get('required', False):
+                    entry = ''
+                    if plugin_type:
+                        entry += 'plugin_type: %s ' % plugin_type
+                        if plugin_name:
+                            entry += 'plugin: %s ' % plugin_name
+                    entry += 'setting: %s ' % config
+                    raise AnsibleError("No setting was provided for required configuration %s" % (entry))
+                else:
                     value = defs[config].get('default')
                     origin = 'default'
                     # skip typing as this is a temlated default that will be resolved later in constants, which has needed vars

lib/ansible/plugins/lookup/vars.py

@@ -11,7 +11,7 @@ DOCUMENTATION = """
     description:
       - Retrieves the value of an Ansible variable.
     options:
-      _term:
+      _terms:
         description: The variable names to look up.
         required: True
       default:
@@ -69,6 +69,7 @@ class LookupModule(LookupBase):
             self._templar.set_available_variables(variables)
         myvars = getattr(self._templar, '_available_variables', {})
 
+        self.set_option('_terms', terms)
         self.set_options(direct=kwargs)
         default = self.get_option('default')