Install certificates in CloudFront on renew

[jwarren116]

Like is mentioned in https://github.com/dlapiduz/certbot-s3front/pull/60, certbot does not call deploy_cert() on a renew. After running the branch in the above PR I ran into a few issues. This PR serves to fix those issues and builds on top of the branch https://github.com/crgwbr submitted in https://github.com/dlapiduz/certbot-s3front/pull/60.

• All of my certificates are in the form of le-my.domain.com-0123456789, so the local path the restart() was using was incorrect (it was assumed that certificate name was the same as the domain).
• When renewing a single certificate, the plugin would attempt to call deploy_cert() for all certificates, not just the one I was renewing. This actually resulted in some certificates being deployed and deleted that I didn't want changed.
• Some of the logical checks were testing for strings inside strings, which was causing false positives with subdomains. For example, renewing a certificate for example.com would think the existing uploaded certificate foo.example.com was an old duplicate, and it would try to delete it.

[dlapiduz]

Hi @jwarren116, thanks for the PR and apologies for the delay.

I've been reading about the renew APIs and decided to go with the more native way of doing renewals. Can you please check if https://github.com/dlapiduz/certbot-s3front/commit/5991508574c1ba8fd8862b106e9671a5327da5cb fixes the issue?

Thanks!