recreate in another branch due to rebase problem (#5557)

contrib/inventory_builder/inventory.py

@@ -81,7 +81,7 @@ class KubesprayInventory(object):
         if self.config_file:
             try:
                 self.hosts_file = open(config_file, 'r')
-                self.yaml_config = yaml.load(self.hosts_file)
+                self.yaml_config = yaml.load_all(self.hosts_file)
             except OSError:
                 pass