[SPEC] Added empty path to indices.open and indices.close

Author: clintongormley

rest-api-spec/api/indices.close.json

@@ -4,7 +4,7 @@
     "methods": ["POST"],
     "url": {
       "path": "/{index}/_close",
-      "paths": ["/{index}/_close"],
+      "paths": ["/_close", "/{index}/_close"],
       "parts": {
         "index": {
           "type" : "string",

rest-api-spec/api/indices.open.json

@@ -4,7 +4,7 @@
     "methods": ["POST"],
     "url": {
       "path": "/{index}/_open",
-      "paths": ["/{index}/_open"],
+      "paths": ["_open", /{index}/_open"],
       "parts": {
         "index": {
           "type" : "string",