Migration specs fail locally if no Geo DB is configured
Since https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/4397, migration specs will fail locally if no Geo database is created.
This is different on CI, because it always has a Geo database.
Failure/Error: ActiveRecord::Base.descendants.each { |klass| klass.reset_column_information }
RuntimeError:
Geo secondary database is not configured
# ./ee/app/models/geo/tracking_base.rb:12:in `connection'
# ./spec/support/migrations_helpers.rb:29:in `block in reset_column_in_all_models'
# ./spec/support/migrations_helpers.rb:29:in `each'
# ./spec/support/migrations_helpers.rb:29:in `reset_column_in_all_models'
# ./spec/support/migrations_helpers.rb:60:in `schema_migrate_up!'
# ./spec/spec_helper.rb:176:in `block (2 levels) in <top (required)>'