Moved built-in policies from external files to internal database. (#75)

test/docker/expected_results/openssh_5.6p1_custom_policy_test8.json

@@ -0,0 +1 @@
+{"errors": [{"actual": ["1024"], "expected_optional": [""], "expected_required": ["2048"], "mismatched_field": "RSA CA key (ssh-rsa-cert-v01@openssh.com) sizes"}], "host": "localhost", "passed": false, "policy": "Docker poliicy: test8 (version 1)"}