Update 7.9 rest specs (#128)

Author: russcam

api_generator/rest_specs/indices.create_data_stream.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html",
       "description":"Creates or updates a data stream"
     },
-    "stability":"experimental",
+    "stability":"stable",
     "url":{
       "paths":[
         {

api_generator/rest_specs/indices.data_streams_stats.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html",
       "description":"Provides statistics on operations happening in a data stream."
     },
-    "stability":"experimental",
+    "stability":"stable",
     "url":{
       "paths":[
         {
@@ -26,25 +26,6 @@
           }
         }
       ]
-    },
-    "params":{
-      "expand_wildcards":{
-        "type":"enum",
-        "options":[
-          "open",
-          "closed",
-          "hidden",
-          "none",
-          "all"
-        ],
-        "default":"open",
-        "description":"Whether to expand wildcard expression to concrete indices that are open, closed or both."
-      },
-      "forbid_closed_indices":{
-        "type":"boolean",
-        "description":"If set to false stats will also collected from closed indices if explicitly specified or if expand_wildcards expands to closed indices",
-        "default":true
-      }
     }
   }
 }

api_generator/rest_specs/indices.delete_data_stream.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html",
       "description":"Deletes a data stream."
     },
-    "stability":"experimental",
+    "stability":"stable",
     "url":{
       "paths":[
         {

api_generator/rest_specs/indices.get_data_stream.json

@@ -4,7 +4,7 @@
       "url":"https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html",
       "description":"Returns data streams."
     },
-    "stability":"experimental",
+    "stability":"stable",
     "url":{
       "paths":[
         {