Currently, service-cert-copy role used to copy certs and CA
into containers has 'when' statements  that check if HAProxy is
defined and enabled for the service. However, some services like
RabbitMQ, ProxySQL or Redis don't use HAProxy

This patch removes the when condition, as it is not necessary.

PartiallyImplements: mariadb-ssl
Change-Id: I8864e05212e0ed76ea3a0108b00ed9dd04b1a697