[v3.0.0] Terraform 0.12 support

add terraform 0.12 support

[v2.0.1] Fixes

fix finding asg group name nodes, fixes #8

[v2.0.0] Redesign

• autogenerate passwords and cookie secret
• add ability to provide volume type and size
• add ability to provide additional security groups both for ELB and
  RabbitMQ nodes
• add create_before_destroy for launch configuration
• consistent resource naming to allow creating multiple clusters
• add min_size max_size and desired_size vars for ASG

[v1.0.0] Initial version

Merge pull request #3 from Dmitry1987/bugfix/readme-variable-name-fix

Readme duplicate variable name in config fix

no-autoscaling

rabitmq terraform cluster