dashboard: change dashboard_grafana_api_no_ssl_verify default value

This sets the `dashboard_grafana_api_no_ssl_verify` default value
according to the length of `dashboard_crt` and `dashboard_key`.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

group_vars/all.yml.sample

@@ -659,7 +659,7 @@ dummy:
 #dashboard_crt: ''
 #dashboard_key: ''
 #dashboard_tls_external: false
-#dashboard_grafana_api_no_ssl_verify: False
+#dashboard_grafana_api_no_ssl_verify: "{{ true if dashboard_protocol == 'https' and not grafana_crt and not grafana_key else false }}"
 #dashboard_rgw_api_user_id: ceph-dashboard
 #dashboard_rgw_api_admin_resource: ''
 #dashboard_rgw_api_no_ssl_verify: False

group_vars/rhcs.yml.sample

@@ -659,7 +659,7 @@ ceph_docker_registry_auth: true
 #dashboard_crt: ''
 #dashboard_key: ''
 #dashboard_tls_external: false
-#dashboard_grafana_api_no_ssl_verify: False
+#dashboard_grafana_api_no_ssl_verify: "{{ true if dashboard_protocol == 'https' and not grafana_crt and not grafana_key else false }}"
 #dashboard_rgw_api_user_id: ceph-dashboard
 #dashboard_rgw_api_admin_resource: ''
 #dashboard_rgw_api_no_ssl_verify: False

roles/ceph-defaults/defaults/main.yml

@@ -651,7 +651,7 @@ dashboard_admin_user_ro: false
 dashboard_crt: ''
 dashboard_key: ''
 dashboard_tls_external: false
-dashboard_grafana_api_no_ssl_verify: False
+dashboard_grafana_api_no_ssl_verify: "{{ true if dashboard_protocol == 'https' and not grafana_crt and not grafana_key else false }}"
 dashboard_rgw_api_user_id: ceph-dashboard
 dashboard_rgw_api_admin_resource: ''
 dashboard_rgw_api_no_ssl_verify: False