Prevent EMR cluster recreation when javax.jdo.option.ConnectionPassword is used in configuration_json

[3h4x]

what

• Bootstrap action added that executes /bin/echo and as an argument md5 hash of configuration_json - dummy action
• configuration_json added to lifecycle/ignore_changes

why

• When configuration_json uses javax.jdo.option.ConnectionPassword then terraform will force recreate cluster with every apply. Reason for that is that AWS API for describe_cluster returns configuration with string '****instead of real password forjavax.jdo.option.ConnectionPassword.terraform` want to replace that "masked" password with actual password.

references

• https://github.com/terraform-providers/terraform-provider-aws/issues/12683
• https://github.com/terraform-providers/terraform-provider-aws/issues/7733