ISAICP-9218: Still keep an empty command for local development.

.ddev/commands/host/install

@@ -6,4 +6,5 @@
 
 ddev solr:empty
 ddev exec vendor/bin/run toolkit:install-clean
+ddev virtuoso:clear-data
 ddev exec vendor/bin/run dev:install-modules

.ddev/commands/host/rebuild

@@ -6,5 +6,6 @@
 
 ddev solr:restore
 ddev run toolkit:install-clone
+ddev virtuoso:clear-data
 ddev run dev:install-modules
 ddev drush user:unblock --uid=1

.ddev/commands/web/virtuoso_clear_data

+#!/bin/bash
+
+## Description: Clear the <http://data? Virtuoso graph
+## Usage: virtuoso:clear-data
+
+vendor/bin/drush eval "Drupal::service('rdf_sync.connection')->update('CLEAR GRAPH <http://data>')"
+echo "Cleared the <http://data> graph."