Cascadia cluster name update

subduction/interface/Cascadia/bottom/full-rupture/cluster-in/cluster-7a/cluster-set.json

 {
-  "name": "Cluster 7a (bottom)",
+  "name": "Cascadia (cluster-7a, bottom)",
   "id": 3300,
   "rupture-sets": [
     {

subduction/interface/Cascadia/bottom/full-rupture/cluster-in/cluster-7b/cluster-set.json

 {
-  "name": "Cluster 7b (bottom)",
+  "name": "Cascadia (cluster-7b, bottom)",
   "id": 3310,
   "rupture-sets": [
     {

subduction/interface/Cascadia/bottom/full-rupture/cluster-in/cluster-8/cluster-set.json

 {
-  "name": "Cluster 8 (bottom)",
+  "name": "Cascadia (cluster-8, bottom)",
   "id": 3320,
   "rupture-sets": [
     {

subduction/interface/Cascadia/middle/full-rupture/cluster-in/cluster-7a/cluster-set.json

 {
-  "name": "Cluster 7a (middle)",
+  "name": "Cascadia (cluster-7a, middle)",
   "id": 3400,
   "rupture-sets": [
     {

subduction/interface/Cascadia/middle/full-rupture/cluster-in/cluster-7b/cluster-set.json

 {
-  "name": "Cluster 7b (middle)",
+  "name": "Cascadia (cluster-7b, middle)",
   "id": 3410,
   "rupture-sets": [
     {

subduction/interface/Cascadia/middle/full-rupture/cluster-in/cluster-8/cluster-set.json

 {
-  "name": "Cluster 8 (middle)",
+  "name": "Cascadia (cluster-8, middle)",
   "id": 3420,
   "rupture-sets": [
     {

subduction/interface/Cascadia/top/full-rupture/cluster-in/cluster-7a/cluster-set.json

 {
-  "name": "Cluster 7a (top)",
+  "name": "Cascadia (cluster-7a, top)",
   "id": 3500,
   "rupture-sets": [
     {

subduction/interface/Cascadia/top/full-rupture/cluster-in/cluster-7b/cluster-set.json

 {
-  "name": "Cluster 7b (top)",
+  "name": "Cascadia (cluster-7b, top)",
   "id": 3510,
   "rupture-sets": [
     {

subduction/interface/Cascadia/top/full-rupture/cluster-in/cluster-8/cluster-set.json

 {
-  "name": "Cluster 8 (top)",
+  "name": "Cascadia (cluster-8, top)",
   "id": 3520,
   "rupture-sets": [
     {