Operators will use the parameter_defaults section of any Heat
environment to set per service parameters.
+Apart from sevice specific inputs, there are few default parameters for all
+the services. Following are the list of default parameters:
+
+ * ServiceNetMap: Mapping of service_name -> network name. Typically set via
+ parameter_defaults in the resource registry. This mapping overrides those
+ in ServiceNetMapDefaults.
+
+ * EndpointMap: Mapping of service endpoint -> protocol. Typically set via
+ parameter_defaults in the resource registry.
+
+ * DefaultPasswords: Mapping of service -> default password. Used to help pass
+ top level passwords managed by Heat into services.
+
+ * RoleName: Name of the role on which this service is deployed. A service can
+ be deployed in multiple roles.
+
+ * RoleParameters: Parameter specific to a role on which the service is
+ applied.
+
Config Settings
---------------