Ensure the amqp options are present in config file

This change ensures that the amqp1 will be present into the
configfile even the required python module are not present and
also put them into the correct section, [oslo_messaging_amqp1].

Change-Id: I1005405d7ed51090495688eadbe400dbff7c3cc9
Merge "Ensure the amqp options are present in config file"