distinguish report include and include_for_find

includes are for columns in the query
includes_for_find are for the models used by the report views

Reports merge the two concepts. But only the miq expression (where) or
includes (select) need to be in the references. While includes_for_find
only needs to preload the models for use in ruby.

This allows each to be accessed in a report.

app/models/miq_report/generator.rb

@@ -81,7 +81,11 @@ def table2class(table)
   end
 
   def get_include_for_find
-    include_as_hash(include.presence || invent_report_includes).deep_merge(include_for_find || {}).presence
+    get_include.deep_merge(include_for_find || {}).presence
+  end
+
+  def get_include
+    include_as_hash(include.presence || invent_report_includes)
   end
 
   def invent_includes