Fix: config generation
Fix: config generation

Review https://review.openstack.org/#/c/530865 renamed
storage_opt to opts but missed to rename it in
muranoagent/opts.py. This patch fixes it.

Change-Id: I41f06279147f0d2aafe80efeb1c0e558f2698d5e

openstack/murano-agent,openstack/murano-agent,openstack/murano-agent,openstack/murano-agent