Update plugin interface for examples
minor refactor/enhance of property resolver and plugin adapter

* Enable Configurable object support in PluginAdapterUtility
* expose default property scope when configuring objects
Move classes to another package

PluginAdapterUtility, PropertyResolver, PropertyResolverFactory,
RuntimePropertyResolver, moved to package:

com.dtolabs.rundeck.core.plugins.configuration
Add static ways to retrieve project/framework properties
Enable plugin property configuration
Update examples with configuration properties
Improve logging for file storage service
Update rundeck log format with eventType