single server JS does show direct consumer when it shouldn't (clustered JS does not do that)

[matthiashanel]

config used (ignore the names saying leaf, this is a single server cluster):

port: 4111
server_name: leaf-server-1
jetstream {
	store_dir="./store_leaf_1"
}

cluster {
  name: leaf
}

include ./accounts.conf

Steps to reproduce:

1. add a stream
2. add a source stream sourcing first stream
3. first stream now lists extra consumer

> nats -s nats://rmt:rmt@localhost:4111 s ls
No Streams defined
> nats -s nats://rmt:rmt@localhost:4111 s add
? Stream Name test
? Subjects to consume test
? Storage backend file
? Retention Policy Limits
? Discard Policy Old
? Stream Messages Limit -1
? Message size limit -1
? Maximum message age limit -1
? Maximum individual message size -1
? Duplicate tracking time window 2m
? Replicas 1
Stream test was created

Information for Stream test created 2021-05-12T00:18:40-04:00

Configuration:

             Subjects: test
     Acknowledgements: true
            Retention: File - Limits
             Replicas: 1
       Discard Policy: Old
     Duplicate Window: 2m0s
     Maximum Messages: unlimited
        Maximum Bytes: unlimited
          Maximum Age: 0.00s
 Maximum Message Size: unlimited
    Maximum Consumers: unlimited


State:

             Messages: 0
                Bytes: 0 B
             FirstSeq: 0
              LastSeq: 0
     Active Consumers: 0
> nats -s nats://rmt:rmt@localhost:4111 s add  --source test
X Sorry, your reply was invalid: Value is required
? Stream Name agg
? Storage backend file
? Retention Policy Limits
? Discard Policy Old
? Stream Messages Limit -1
? Message size limit -1
? Maximum message age limit -1
? Maximum individual message size -1
? Duplicate tracking time window 2m
? Replicas 1
? Adjust source "test" start No
? Import "test" from a different JetStream domain No
? Import "test" from a different account No
Stream agg was created

Information for Stream agg created 2021-05-12T00:18:59-04:00

Configuration:

     Acknowledgements: true
            Retention: File - Limits
             Replicas: 1
       Discard Policy: Old
     Duplicate Window: 2m0s
     Maximum Messages: unlimited
        Maximum Bytes: unlimited
          Maximum Age: 0.00s
 Maximum Message Size: unlimited
    Maximum Consumers: unlimited
              Sources: test


State:

             Messages: 0
                Bytes: 0 B
             FirstSeq: 0
              LastSeq: 0
     Active Consumers: 0
> nats -s nats://rmt:rmt@localhost:4111 c ls
? Select a Stream test
Consumers for Stream test:

	abCyIUyQ

> nats -s nats://rmt:rmt@localhost:4111 c info test
? Select a Consumer abCyIUyQ
Information for Consumer test > abCyIUyQ created 2021-05-12T00:22:25-04:00

Configuration:

    Delivery Subject: $JS.S.1o9KHHEE
         Deliver All: true
          Ack Policy: None
       Replay Policy: Instant
  Maximum Deliveries: 1
      Idle Heartbeat: 2.00s
        Flow Control: true

Cluster Information:

                Name: leaf
              Leader: leaf-server-1

State:

   Last Delivered Message: Consumer sequence: 0 Stream sequence: 0
     Acknowledgment floor: Consumer sequence: 0 Stream sequence: 0
         Outstanding Acks: 0
     Redelivered Messages: 0
     Unprocessed Messages: 0

>