boards.txt.py: Fix packagegen to use newfilestr instead of filestr when writing file. (#7018)

Three missing boards are now in package/package_esp8266com_index.template.json.

Author: mhightower83

package/package_esp8266com_index.template.json

@@ -62,6 +62,9 @@
                   {
                      "name": "SparkFun ESP8266 Thing Dev"
                   },
+                  {
+                     "name": "SparkFun Blynk Board"
+                  },
                   {
                      "name": "SweetPea ESP-210"
                   },
@@ -106,6 +109,12 @@
                   },
                   {
                      "name": "ESPectro Core"
+                  },
+                  {
+                     "name": "ITEAD Sonoff"
+                  },
+                  {
+                     "name": "DOIT ESP-Mx DevKit (ESP8285)"
                   }
                ],
                "toolsDependencies": [
@@ -359,4 +368,4 @@
          ]
       }
    ]
-}
+}

tools/boards.txt.py

@@ -1043,7 +1043,7 @@
     'resetmethod_nodtr_nosync': collections.OrderedDict([
         ( '.upload.resetmethod', '--before no_reset_no_sync --after soft_reset' ),
         ]),
-  
+
     ####################### menu.FlashMode
 
     'flashmode_menu': collections.OrderedDict([
@@ -1635,7 +1635,7 @@ def package ():
     # To get consistent indent/formatting read the JSON and write it out programattically
     if packagegen:
         with open(pkgfname, 'w') as package_file:
-            filejson = json.loads(filestr, object_pairs_hook=collections.OrderedDict)
+            filejson = json.loads(newfilestr, object_pairs_hook=collections.OrderedDict)
             package_file.write(json.dumps(filejson, indent=3, separators=(',',': ')))
         print("updated:   %s" % pkgfname)
     else: