allow empty names in stream configurations
This allows them to be used in Templates that *requires* an
empty template name
"title": "io.nats.jetstream.api.v1.stream_configuration",
"type":"object",
"required":[
- "name",
"retention",
"max_consumers",
"max_msgs",
"properties": {
"name": {
"description": "A unique name for the Stream.",
- "minLength": 1,
"pattern": "^[^.*>]+$"
},
"subjects": {
