Cloud Load Balancers add :create and :delete actions

[stevendgonzales]

Update Cloud Load Balancers to have idempotent :create and :delete actions, as well as :create_and_add_node

:create - creates a load balancer if it does not exists. Updates components if the state of the load balancer does not meet the desired state specified in the provider. If the load balancer is in desired state - do nothing. This action should try and expose configurations available through the Fog client, especially ssl_termination

Will need to investigate if Fog will allow the creation of a load balancer with no nodes specified before deciding on implementing :create/:create_and_add_node as two separate actions

[stevendgonzales]

Note: I should begin work on these proposed features sometime next week. Any feedback is appreciated.