move the batch building component to its new home

src/assets/config/computesites.json

 [
   {
-    "url": "https://vm-118-138-240-255.erc.monash.edu.au/sbatch/",
+    "url": "https://strudel2-batch-builder.cloud.cvl.org.au/m3/",
     "name": "M3",
     "host": "m3-login2.massive.org.au",
     "dtn": "m3-dtn1.massive.org.au",
@@ -22,7 +22,7 @@
     "statcmd": "/usr/local/sv2/sv2stat.py"
   },
   {
-    "url": "https://vm-118-138-240-255.erc.monash.edu.au/cvluwa/",
+    "url": "https://strudel2-batch-builder.cloud.cvl.org.au/cvluwa/",
     "name": "CVL@UWA",
     "host": "146.118.65.246",
     "dtn": "146.118.65.246",