Use one openstack security group per deployment

[manics]

Currently all IDR deployments (test, production, staging) use the same set of three security groups: idr-omero-external, idr-web-external, idr-bastion-external

• https://github.com/IDR/ansible-role-openstack-idr-security-groups/blob/1.2.0/tasks/main.yml

These separate security groups are unnecessary since they all apply to the same gateway host. We should get rid of this role and these multiple rules, and instead create a single security group in openstack-create-infrastructure.yml prefixed with the idr_environment.