Only collect rollup associations

VimPerformanceState are used to represent an object in the past.
These records are used for metrics rollups, metric calculations, and chargeback calculations
Do note, that chargeback calculations do contain some form of a rollup.

We only rollup metrics by the PERF_ROLLUP_CHILDREN association.
Collecting all these other grow our VimPerformanceState table and take up processing time,
for collecting vps and downloading vps.

app/models/vim_performance_state.rb

@@ -5,8 +5,8 @@ class VimPerformanceState < ApplicationRecord
 
   belongs_to :resource, :polymorphic => true
 
-  ASSOCIATIONS = [:vms, :hosts, :ems_clusters, :ext_management_systems, :storages, :container_nodes, :container_groups,
-                  :all_container_groups, :containers]
+  # we want these even if we don't roll them up
+  ASSOCIATIONS = Metric::Rollup::ASSOC_KEYS
 
   # Define accessors for state_data information
   [
@@ -187,7 +187,7 @@ def capture_total(field)
 
   def capture_assoc_ids
     result = {}
-    ASSOCIATIONS.each do |assoc|
+    (ASSOCIATIONS + resource.class::PERF_ROLLUP_CHILDREN).uniq.each do |assoc|
       method = if assoc == :vms
                  if resource.kind_of?(EmsCluster)
                    :all_vms_and_templates