Fix typo in haproxy bundle

Fix typo in haproxy bundle

Change I6f4d3a5abae8f1781cfe6f69ff960aad500061e3 slipped in a typo
and it removed the '$' character from a puppet manifest. Which causes
a deployment to fail with:
INFO: running container haproxy-bundle-docker-0 for the first time
ERROR: /usr/bin/docker-current: Error response from daemon: Invalid bind mount spec "deployed_ssl_cert_path:deployed_ssl_cert_path:ro": Invalid volume destination path: 'deployed_ssl_cert_path' mount path must be absolute.. See '/usr/bin/docker-current run --help'.
ERROR: docker failed to launch container

Change-Id: Ic602fd443d38482bf1f924531561b2174dc38293