Sample Global Referential Integrity plugin

Steps

To configure the Global Referential Integrity plugin, run dsconfig with the create-plugin option.

Any attributes for which referential integrity should be maintained should have values that are DNs and should be indexed for equality in all backend servers.

Example:

In this example, the plugin ensures that the member, uniqueMember, and manager attributes maintain their DN references in the defined subtree views.
```
$ bin/dsconfig create-plugin \
  --plugin-name "Global Referential Integrity" \
  --type global-referential-integrity \
  --set "enabled:true" \
  --set "attribute-type:member" \
  --set "attribute-type:uniqueMember" \
  --set "attribute-type:manager" \
  --set "subtree-view:employee-view" \
  --set "subtree-view:groups-view"
```