Description of problem:

After upgrading to 6.3 i see no history for my provisioning template

Version-Release number of selected component (if applicable):
6.3

How reproducible:
not sure

Steps to Reproduce:
1. build 6.2
2. create custom Provisioning Template
3. makes a change to that Template
4. check history tab for you change
5. Upgrade to 6.3
6. go to the history tab and no history will be displayed

Actual results:

no history is displayed

Expected results:

All previous history is displayed

Additional info:

It seems in 6.2 they were saved in the audit table as `:auditable_type => Template` whereas 6.3 they look like they are `:auditable_type => ProvisioningTemplate` and there has been no migration.

irb(main):028:0* Audit.descending.where(:auditable_id => 111, :auditable_type => Template, :action => 'update').count
=> 82
irb(main):029:0> Audit.descending.where(:auditable_id => 111, :auditable_type => Template, :action => 'update').first.created_at
=> Fri, 16 Mar 2018 15:46:56 UTC +00:00
irb(main):030:0> Audit.descending.where(:auditable_id => 111, :auditable_type => ProvisioningTemplate, :action => 'update').count
=> 2
irb(main):031:0> Audit.descending.where(:auditable_id => 111, :auditable_type => ProvisioningTemplate, :action => 'update').first.created_at
=> Wed, 21 Mar 2018 16:27:25 UTC +00:00

We upgraded on the morning of 21 Mar 2018