Add oslo.privsep to config-generator list

We recently exposed the privsep opts for config generator use, so
projects that depend on oslo.privsep should include them in their
sample configs.

Change-Id: I59702c8b84bbcf21d32150ede0a3758d1a456bd6

tools/config/cinder-config-generator.conf

@@ -12,6 +12,7 @@ namespace = oslo.log
 namespace = oslo.messaging
 namespace = oslo.middleware
 namespace = oslo.policy
+namespace = oslo.privsep
 namespace = oslo.reports
 namespace = oslo.service.periodic_task
 namespace = oslo.service.service