chore(cloudinit): remove superfluous check
feat(tests): add cover script
Merge pull request #104 from jonboulle/tests

feat(tests): add coverage script
Merge pull request #99 from jonboulle/simple

chore(cloudinit): remove superfluous check
feat(*): warn on encountering unrecognized keys in cloud-config
fix(initialize): also check for unknown coreos keys