0.4.0

• Implement loadbalancer.securityListManagementMode: Frontend which only
  manages security list rules for load balancer ingress. [#180]
• Depreciate loadbalancer.disableSecurityListManagement in favour of
  loadbalancer.securityListManagementMode: None. [#180]
• Implement loadbalancer.securityLists to allow explicit configuration of the
  security lists that the CCM manages on a per-subnet basis [#164].
• Implement support for instance principles authentication [#155]