Align routing param type with search.json
Relates
"description" : "Specify the node or shard the operation should be performed on (default: random)"
},
"routing": {
- "type" : "string",
- "description" : "Specific routing value"
+ "type" : "list",
+ "description" : "A comma-separated list of specific routing values"
},
"q": {
"type" : "string",
