SSL support for custom domains.

Add oo-ssl-cert-{add/remove}

Minor fixup.

Add ssl cert and private key verification.

Create/remove vhost entry when cert is added/removed.

Cleanup.

Remove alias specific conf in remove_alias.

Minor fixes.

Changes to get SNI working with current vhost configs.

Fix alias remove test.

Add missing options to help.

BZ 896405: Check if alias exists before adding ssl cert.

BZ 896371: Validate private key is unencrypted.

BZ 896386: Fix for origin URL redirecting after removing SSL.