add missing orientation value
metric_name,metric_type,interval,unit_name,per_unit_name,description,orientation,integration,short_name
-redis.sentinel.known_sentinels,gauge,,instance,,number of sentinels detected,,redis_sentinel,known sentinels
-redis.sentinel.known_slaves,gauge,,instance,,number of slaves detected,,redis_sentinel,known slaves
-redis.sentinel.last_ok_ping_latency,gauge,,second,,number of seconds since last OK ping,,redis_sentinel,last ok latency
-redis.sentinel.ok_sentinels,gauge,,instance,,number of sentinels up and running,,redis_sentinel,ok sentinels
-redis.sentinel.ok_slaves,gauge,,instance,,number of slaves up and running,,redis_sentinel,ok slaves
-redis.sentinel.link_pending_commands,gauge,,command,,number of pending sentinel commands,,redis_sentinel,pending commands
-redis.sentinel.ping_latency,gauge,,millisecond,,latency of a sentinel ping,,redis_sentinel,ping latency
-redis.sentinel.failover,count,,occurrence,,number of failovers detected,,redis_sentinel,failovers
+redis.sentinel.known_sentinels,gauge,,instance,,number of sentinels detected,0,redis_sentinel,known sentinels
+redis.sentinel.known_slaves,gauge,,instance,,number of slaves detected,0,redis_sentinel,known slaves
+redis.sentinel.last_ok_ping_latency,gauge,,second,,number of seconds since last OK ping,0,redis_sentinel,last ok latency
+redis.sentinel.ok_sentinels,gauge,,instance,,number of sentinels up and running,0,redis_sentinel,ok sentinels
+redis.sentinel.ok_slaves,gauge,,instance,,number of slaves up and running,0,redis_sentinel,ok slaves
+redis.sentinel.link_pending_commands,gauge,,command,,number of pending sentinel commands,0,redis_sentinel,pending commands
+redis.sentinel.ping_latency,gauge,,millisecond,,latency of a sentinel ping,0,redis_sentinel,ping latency
+redis.sentinel.failover,count,,occurrence,,number of failovers detected,0,redis_sentinel,failovers
