[nrfconnect] Fixed paths used to create flash bundle

Added nrfconnect directory in path used to copy bundle outputs.

Author: kkasperczyk-no

scripts/build/builders/nrf.py

@@ -239,6 +239,6 @@ def build_outputs(self):
     def bundle_outputs(self):
         if self.app == NrfApp.UNIT_TESTS:
             return
-        with open(os.path.join(self.output_dir, self.app.FlashBundleName())) as f:
+        with open(os.path.join(self.output_dir, 'nrfconnect', self.app.FlashBundleName())) as f:
             for line in filter(None, [x.strip() for x in f.readlines()]):
-                yield BuilderOutput(os.path.join(self.output_dir, line), line)
+                yield BuilderOutput(os.path.join(self.output_dir, 'nrfconnect', line), line)