fix(coreos-c10n): Exit gracefully on 404, restart on failure.

The ec2 metadata service reports a 404 if the user data is blank.
fix(coreos-c10n): Use a more conservative restart time
Merge pull request #48 from marineam/fix-blank-data

fix(coreos-c10n): Exit gracefully on 404, restart on failure.
fix(coreos-c10n): Revert restart policy in c10n

Restart is not valid for oneshot services. Oops...
Merge pull request #49 from marineam/fix

fix(coreos-c10n): Revert restart policy in c10n
fix(gitignore): ignore *.swp
feat(cloudinit): Add coreos cloudinit impl
refactor(coreos-c10n): Use coreos-cloudinit under coreos-c10n