slapos.slap: fix __getattr__ of product collection.

so that product.foo works.

slapos/slap/slap.py

@@ -177,8 +177,9 @@ class SoftwareProductCollection(object):
   def __init__(self, logger, slap):
     self.logger = logger
     self.slap = slap
-    self.__getattr__ = self.get
-  def get(self, software_product):
+    self.get = self.__getattr__
+
+  def __getattr__(self, software_product):
       self.logger.info('Getting best Software Release corresponging to '
                        'this Software Product...')
       software_release_list = \

slapos/tests/slap.py

@@ -1143,15 +1143,17 @@ class TestSoftwareProductCollection(SlapMixin):
       self.product_collection.get, 'random_reference',
     )
 
-  def test_get_product_gettattr(self):
+  def test_get_product_getattr(self):
     """
     Test that __getattr__ method is bound to get() method.
     """
-    self.getSoftwareReleaseListFromSoftwareProduct_response = []
+    self.getSoftwareReleaseListFromSoftwareProduct_response = ['0']
+    self.product_collection.foo
     self.assertEqual(
       self.product_collection.__getattr__,
       self.product_collection.get
     )
+    self.assertEqual(self.product_collection.foo, '0')
 
 if __name__ == '__main__':
   print 'You can point to any SLAP server by setting TEST_SLAP_SERVER_URL '\