Description of problem: Removing CV error's with "Cannot delete record because of dependent content_facet"

How reproducible:

Steps to Reproduce:
1. Move all Hosts from CV to another
2. Delete CV
3.

Actual results:
Will not allow deleting the CV with the error "Cannot delete record because of dependent content_facet"

Expected results:
Delete the CV

Additional info:
Workaround was as below:

1. foreman-rake console
   > pp ::Katello::ContentView.find_by(name: 'GEL-PROD-8_2-DevSuite').content_facets.first
   —

Note. The name of your CV is "GEL-PROD-8_2-DevSuite" and it should be empty. However, we can see an entry over there
—
#<Katello::Host::ContentFacet:0x00005640b91e8778
id: 464,
host_id: 498,
uuid: "aaed8122-84da-4b1f-afa2-1a03944079a2",
content_view_id: 4,
lifecycle_environment_id: 1,
kickstart_repository_id: nil,
content_source_id: nil,
installable_security_errata_count: 0,
installable_enhancement_errata_count: 0,
installable_bugfix_errata_count: 0,
applicable_rpm_count: 0,
upgradable_rpm_count: 0,
applicable_module_stream_count: 0,
upgradable_module_stream_count: 0,
applicable_deb_count: 0,
upgradable_deb_count: 0>
—

We can see that the host_id is 498 and id is 464, another way to confirm that this is not anymore in your environment, it's trying to access the link below

https://your_satellite_fqdn_here/content_hosts/498

Note. This will return "Danger alert:Resource host not found by id '498'"

In order to fix, yet on "foreman-rake console"
—
> ::Katello::Host::ContentFacet.find(464)
> ::Katello::Host::ContentFacet.find(464).destroy!
> ::Katello::Host::ContentFacet.find(464)
—

Once we got more than one object lost in your content facet, we created a rake that will do the cleanup for you. Just follow as below

1. Create the file cleanup.rake with the content below
—
::Katello::ContentView.find_by(name: 'GEL-PROD-8_2-DevSuite').content_facets.each do |h|
puts "#

"
::Katello::Host::ContentFacet.find(h.id).destroy
end
—

2. Call the foreman-rake passing the file
—

1. foreman-rake console < cleanup.rake

DEV Tracker for https://issues.redhat.com/browse/SAT-18610
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2150371