skill settings sync flag

mycroft/configuration/mycroft.conf

@@ -126,7 +126,8 @@
     "url": "https://api.mycroft.ai",
     "version": "v1",
     "update": true,
-    "metrics": false
+    "metrics": false,
+    "sync_skill_settings": true
   },
 
   // The mycroft-core messagebus websocket

mycroft/skills/settings.py

@@ -137,6 +137,12 @@ class SettingsMetaUploader:
         self.settings_meta = {}
         self.api = None
         self.upload_timer = None
+        self.sync_enabled = self.config["server"].get("sync_skill_settings",
+                                                      False)
+        if not self.sync_enabled:
+            LOG.info("Skill settings sync is disabled, settingsmeta will "
+                     "not be uploaded")
+
         self._stopped = None
 
         # Property placeholders
@@ -216,6 +222,8 @@ class SettingsMetaUploader:
         The settingsmeta file does not change often, if at all.  Only perform
         the upload if a change in the file is detected.
         """
+        if not self.sync_enabled:
+            return
         synced = False
         if is_paired():
             self.api = DeviceApi()
@@ -315,6 +323,11 @@ class SkillSettingsDownloader:
         self.remote_settings = None
         self.api = DeviceApi()
         self.download_timer = None
+        self.sync_enabled = Configuration.get()["server"]\
+            .get("sync_skill_settings", False)
+        if not self.sync_enabled:
+            LOG.info("Skill settings sync is disabled, backend settings will "
+                     "not be downloaded")
 
     def stop_downloading(self):
         """Stop synchronizing backend and core."""
@@ -328,6 +341,8 @@ class SkillSettingsDownloader:
 
         When used as a messagebus handler a message is passed but not used.
         """
+        if not self.sync_enabled:
+            return
         if is_paired():
             remote_settings = self._get_remote_settings()
             if remote_settings: