Exclude chargeback lookup tables

[carbonin]

An AR validation which was being enforced during seeding was preventing the global server from starting up with failing rows in the database.

This situation happens when the seeded rows get replicated up from a remote region and then the global appliance runs through seeding again.

https://bugzilla.redhat.com/show_bug.cgi?id=1435004

[miq-bot]

Checked commit carbonin@259ab71 with ruby 2.2.6, rubocop 0.47.1, and haml-lint 0.20.0
0 files checked, 0 offenses detected
Everything looks good. 👍

[isimluk]

This is alright as we don't replicate Rates already, and these tables are just enums for Rates.

@carbonin, this is caused by seed clean-up I did few weeks ago. Sorry, and thanks for the fix!

[bdunne]

👍 LGTM
Can the replication tests be enhanced to test seeding?
I think it would just take:

1. global region seed
2. remote region seed
3. replicate
4. expect(global_region.seed).not_to raise_error

[carbonin]

So there are no more actual replication tests (tests that actually replicate the data).

We might be able to do something like seed with two different regions and make sure that doesn't blow up?
We would have to also consider the excluded tables, but that might do the job.