chore: modify script logic to rule out other errors

edge/vmware/clone_vm_template/delete-packer-cache.sh

@@ -2,20 +2,25 @@
 
 source /edge/vmware/clone_vm_template/setenv.sh
 
-# Check if the packer cache exists
-CACHE_OUTPUT=$(govc datastore.ls -ds=$vcenter_datastore /packer_cache 2>&1)
+# First, list directories to confirm access and credentials
+govc datastore.ls -ds=$vcenter_datastore
+if [ $? -ne 0 ]; then
+    echo "Error accessing datastore. Please check credentials and permissions."
+    exit 1
+fi
 
-if [[ $CACHE_OUTPUT == *"/packer_cache was not found"* ]]; then
-  echo "Existing packer cache not found. Nothing to delete."
+# Now, try to list the packer_cache directory
+govc datastore.ls -ds=$vcenter_datastore /packer_cache
+if [ $? -ne 0 ]; then
+    echo "Existing packer cache not found. Nothing to delete."
 else
-  # Cache exists, attempt to delete it
-  govc datastore.rm -ds=$vcenter_datastore /packer_cache
-  RESULT=$?
-  if [ $RESULT -eq 0 ]; then
-    echo "Deleted previous packer cache."
-    exit 0
-  else
-    echo "Failed to delete packer cache."
-    exit 1
-  fi
+    # Cache exists, attempt to delete it
+    govc datastore.rm -ds=$vcenter_datastore /packer_cache
+    if [ $? -eq 0 ]; then
+        echo "Deleted previous packer cache."
+        exit 0
+    else
+        echo "Failed to delete packer cache."
+        exit 1
+    fi
 fi