exp: add the iSCSI and "no backup volume" patches.

Change-Id: Iff34a5096c9ec0ceb0d5884438ebc6f9fbe8523e
diff --git a/patches/series.experimental b/patches/series.experimental
index da86d49..f0de506 100644
--- a/patches/series.experimental
+++ b/patches/series.experimental
@@ -1,3 +1,5 @@
 openstack/cinder/leave-it-to-brick.patch
+openstack/cinder/storpool-rm-backup.patch
+openstack/cinder/storpool-iscsi.patch
 openstack/cinderlib/storpool-test-20190910.patch
 openstack/devstack/eatmydata.patch