Adds the --authorized-address and --additional-security-group options as explained in the issue.

Author: Allan Douglas R. de Oliveira <allan@chaordicsystems.com>

Closes #2088 from douglaz/configurable_sg and squashes the following commits:

e3e48ca [Allan Douglas R. de Oliveira] Adds the option to specify the address authorized to access the SG and another option to provide an additional existing SG