Use file-based renderer on CLI

[Thomas-Gelf]

Expected Behavior

icingacli director serviceset show 'MySQL Replication Client Checks'
/** zones.d/director-global/servicesets.conf **/

/**
 * Service Set: MySQL Replication Client Checks
 * 
 * assign where "MySQL Server" in host.templates && host.vars.is_mysql_slave
 */

apply Service "MySQL Slave Lag" {
    import "MySQL Health Check"

    assign where "MySQL Server" in host.templates && host.vars.is_mysql_slave
    vars.mysql_health_mode = "slave-lag"

    import DirectorOverrideTemplate
}

apply Service "MySQL IO Thread" {
    import "MySQL Health Check"

    assign where "MySQL Server" in host.templates && host.vars.is_mysql_slave
    vars.mysql_health_mode = "slave-io-running"

    import DirectorOverrideTemplate
}

apply Service "MySQL SQL Thread" {
    import "MySQL Health Check"

    assign where "MySQL Server" in host.templates && host.vars.is_mysql_slave
    vars.mysql_health_mode = "slave-sql-running"

    import DirectorOverrideTemplate
}

Current Behavior

icingacli director serviceset show 'MySQL Replication Client Checks'
template ServiceSet "MySQL Replication Client Checks" {
    assign where "MySQL Server" in host.templates && host.vars.is_mysql_slave
}