[CI] Use age Instead of days_since_noncurrent_time

I was apparently following the example from the documentation too closely. We
do not want to use days_since_noncurrent time since it only applies to versioned
objects which we do not have. Use age like I originally intentioned.

Author: boomanaiden154

premerge/gke_cluster/main.tf

@@ -181,7 +181,7 @@ resource "google_storage_bucket" "object_cache_linux" {
       type = "Delete"
     }
     condition {
-      days_since_noncurrent_time = 1
+      age = 1
     }
   }
 }
@@ -202,7 +202,7 @@ resource "google_storage_bucket" "object_cache_windows" {
       type = "Delete"
     }
     condition {
-      days_since_noncurrent_time = 1
+      age = 1
     }
   }
 }