(SUP-2372) add pg_repack schema reset task

tasks/reset_pgrepack_schema.json

@@ -0,0 +1,5 @@
+{
+  "puppet_task_version": 1,
+  "supports_noop": false,
+  "description": "This task will remove and recreate the pg_repack extension"
+}

tasks/reset_pgrepack_schema.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Puppet Task Name: reset_pgrepack_schema
+
+#Determine if PE Postgres is available
+if puppet resource service pe-postgresql | grep -q running; then
+    #Remove the pg_repack extension
+    su - pe-postgres -s '/bin/bash' -c '/opt/puppetlabs/server/bin/psql -d pe-puppetdb -c "DROP EXTENSION pg_repack CASCADE"'
+
+    #Then, recreate the pg_repack extension
+    su - pe-postgres -s '/bin/bash' -c '/opt/puppetlabs/server/bin/psql -d pe-puppetdb -c "CREATE EXTENSION pg_repack"'
+else
+  echo " -- No running PE-PostgreSQL instance found, please run this task against your Primary or PE-PostgreSQL server --"
+fi
+
+echo " -- reset_pgrepack_scheme Task ended: $(date +%s) --"