using ingest to seed the tests

[pgwillia]

Describe the bug
Using ingest to seed the tests

• slows down the tests
• pollutes the logs on travis
• seeds many items that are unused by the tests

To Reproduce
bundle exec rake spec

discovery/spec/rails_helper.rb

Lines 47 to 58 in 1b1904c

	# smoke test the ingest task and setup some seed data for testing
	require 'rake'
	Rails.application.load_tasks
	Rake::Task['delete'].invoke
	%w[database_test_set sfx_test_set symphony_test_set].each do |test_set|
	# work around tasks already_invoked flag being set
	Rake::Task['ingest'].reenable
	Rake::Task['solr:marc:index'].reenable
	Rake::Task['solr:marc:index:work'].reenable
	Rake::Task['ingest'].invoke(test_set)
	end

Expected behavior
Seed only what is required to test. Use initializer specific to the test at hand. Keep the tests really fast to run.

Additional context
Maybe move the smoke test to a travis script? There is also a tangle in blacklight_helper.rb, spec_helper.rb and rails_helper.rb to require code that could be cleaner and more selective.