Declare query parameters

Declared the query parameters, ran make contrib and resolved the validation errors

Author: joshua-adams-1

output/openapi/elasticsearch-openapi.json

@@ -7,15 +7,6 @@
       ],
       "response": []
     },
-    "cluster.allocation_explain": {
-      "request": [
-        "Request: missing json spec query parameter 'current_node'",
-        "Request: missing json spec query parameter 'index'",
-        "Request: missing json spec query parameter 'primary'",
-        "Request: missing json spec query parameter 'shard'"
-      ],
-      "response": []
-    },
     "create": {
       "request": [
         "Request: query parameter 'if_primary_term' does not exist in the json spec",

output/schema/schema.json

@@ -45,6 +45,22 @@ export interface Request extends RequestBase {
     }
   ]
   query_parameters: {
+    /**
+     * Specifies the node ID or the name of the node to only explain a shard that is currently located on the specified node.
+     */
+    current_node?: string
+    /**
+     * Specifies the name of the index that you would like an explanation for.
+     */
+    index?: IndexName
+    /**
+     * If true, returns explanation for the primary shard for the given shard ID.
+     */
+    primary?: boolean
+    /**
+     * Specifies the ID of the shard that you would like an explanation for.
+     */
+    shard?: integer
     /**
      * If true, returns information about disk usage and shard sizes.
      * @server_default false