Add a spec that verifies that stub models have inheritance check

[Fryguy]

I'm not sure how, but it might help data migration authors if the stub models they create were verified as to whether or not they require the

self.inheritance_column = :_type_disabled # disable STI

We might be able to do it by creating a separate test as part of

manageiq-schema/spec/support/migration_helper.rb

Lines 6 to 18 in 3b374e6

	context "##{direction}", :migrations => direction do
	before(:all) do
	prepare_migrate
	end
	around do |example|
	Rails.logger.debug("============================================================")
	clearing_caches(&example)
	end
	it("with empty tables") { migrate }
	instance_eval(&block)

[miq-bot]

This issue has been automatically marked as stale because it has not been updated for at least 6 months.

If you can still reproduce this issue on the current release or on master, please reply with all of the information you have about it in order to keep the issue open.

Thank you for all your contributions!

[bdunne]

Fixed by: #245