Rename test rsa keys.
Update foodcritic to 4.0.0.
Bump rubocop version to 0.24.0.
Bump chef version to 11.12.8.
Merge branch 'master' into copyright
Merge tag 'copyright-v1.1.0'
Merge branch 'chef-cookbook'

Conflicts:
	test/integration/default/core-chef-test_rsa
	test/integration/default/core-chef-test_rsa.pub
	test/integration/default/insecure_rsa_id
	test/integration/default/insecure_rsa_id.pub
	test/integration/default/otr-chef-test_rsa
	test/integration/default/otr-chef-test_rsa.pub