Plugins miss metadata about configuration

Right now, core condition implementations miss the metadata that's required for Rules to be able to make use of the conditions also. Rules requires metadata about the configuration values what right now should live in the condition plugin definition below the 'configuration' key:
From ExecutableInterface

 * - configuration: An array of configuration option definitions, keyed by
 *   option name. Each option definition is a typed data definition describing
 *   the configuration option. Check the typed data definition docs for details.

Let's make sure that's implemented in all core conditions such that Rules can build upon them.

Related issue: #1920816: Factor getConfig(), setConfig(), getConfigDefinition(), and getConfigDefinitions() out of ExecutablePluginBase →

Next steps

See if patch can be rerolled for current d8 head. https://drupal.org/contributor-tasks/reroll