Revving version
Add switch to attachment policy allowing forcing the sdk compat method

When this setting is false it will use the complicated traversal and contains method
* act_entry -> workflow object -> doc_inst -> doc_path
* check if doc_path.path is contained in the act_entry.addln_info

When it is true Dovetail SDK is in play and add attachment act_entries are related to doc_inst so all this is simpler.

Related to DovetailSoftware/agent#1178