chore(cinder): bump cinder chart version (#684)

diff --git a/hack/sync-charts.sh b/hack/sync-charts.sh
index d97e6df..5e0adde 100755
--- a/hack/sync-charts.sh
+++ b/hack/sync-charts.sh
@@ -94,9 +94,15 @@
 curl -sL https://tarballs.opendev.org/openstack/openstack-helm/glance-${GLANCE_VERSION}.tgz \
   | tar -xz -C ${ATMOSPHERE}/charts
 
-CINDER_VERSION=0.3.13
+CINDER_VERSION=0.3.15
 curl -sL https://tarballs.opendev.org/openstack/openstack-helm/cinder-${CINDER_VERSION}.tgz \
   | tar -xz -C ${ATMOSPHERE}/charts
+curl 'https://review.opendev.org/changes/openstack%2Fopenstack-helm~899814/revisions/1/patch?download' \
+  | base64 --decode \
+  | filterdiff -p1 -x 'releasenotes/*' \
+  | filterdiff -p2 -x 'Chart.yaml' \
+  | filterdiff -p1 -i 'cinder/*' \
+  | patch -p2 -d ${ATMOSPHERE}/charts/cinder
 
 PLACEMENT_VERSION=0.3.7
 curl -sL https://tarballs.opendev.org/openstack/openstack-helm/placement-${PLACEMENT_VERSION}.tgz \