tls_backend_ca: /etc/pki/haproxy/backend.{{ base_domain }}.pem
haproxy_removal_applications: []
haproxy_cookie_max_idle: 3600
haproxy_rolling_updates: False
haproxy_18: False

tls_backend_ca: /etc/pki/haproxy/backend.{{ base_domain }}.pem
haproxy_removal_applications: []
haproxy_cookie_max_idle: 3600
haproxy_rolling_updates: False
haproxy_18: False
haproxy_metricbeat: False

Add default value for haproxy_metricbeat switch
Haproxy: Add default value for haproxy_metricbeat switch
