Fixes misspelled amp_ssh_access_allowed config
Fixes misspelled amp_ssh_access_allowed config

The config is misspelled in the sample octavia.conf file
leading to confusion. This fixes that.

Change-Id: I0ed36f3e12a6a9f973918e3d233e54e8834be57f

openstack/octavia,openstack/octavia,openstack/octavia