bitbake: tinfoil: Add iterator support for DataStoreConnector

Some usages need to iterate the datastore. This is slow and not recommended
but support this.

(Bitbake rev: 38b4e330c6c2007e8ead878e1d9e9580d3b19c7b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/tinfoil.py

@@ -104,6 +104,11 @@ class TinfoilDataStoreConnector:
         setattr(self, name, newfunc)
         return newfunc
 
+    def __iter__(self):
+        keys = self.tinfoil.run_command('dataStoreConnectorCmd', self.dsindex, "keys", [], {})
+        for k in keys:
+            yield k
+
 class TinfoilCookerAdapter:
     """
     Provide an adapter for existing code that expects to access a cooker object via Tinfoil,