Fix failing tests due to changing store from yes/no to bool

Author: gmarz

src/Tests/Nest.Tests.Unit/Core/Map/DynamicTemplates/CompletelyGenericTemplate.json

@@ -5,7 +5,7 @@
         "store_generic": {
           "match": "*",
           "mapping": {
-            "store": "yes"
+            "store": true
           }
         }
       }

src/Tests/Nest.Tests.Unit/Core/Map/DynamicTemplates/MultiFieldWithGenericTypes.json

@@ -8,12 +8,12 @@
           "fields": {
             "{name}": {
               "type": "{dynamic_type}",
-              "store": "no",
+              "store": false,
               "index": "analyzed"
             },
             "org": {
               "type": "{dynamic_type}",
-              "store": "yes",
+              "store": true,
               "index": "not_analyzed"
             },
             "suggest": {