Fix version added for new parameters in quantum modules

cloud/quantum_floating_ip

@@ -80,6 +80,7 @@ options:
         - The name of the network of the port to associate with the floating ip. Necessary when VM multiple networks.
      required: false
      default: None
+     version_added: "1.5"
 requirements: ["novaclient", "quantumclient", "neutronclient", "keystoneclient"]
 '''
 

cloud/quantum_subnet

@@ -98,6 +98,7 @@ options:
         - DNS nameservers for this subnet, comma-separated
      required: false
      default: None
+     version_added: "1.4"
    allocation_pool_start:
      description:
         - From the subnet pool the starting address from which the IP should be allocated