Filter events when creating/updating/deleting stacks

[sebdah]

Currently the user will see old events when e.g. deleting a stack. We could work us around that by filtering event statuses depending on the action take. So if we're deleting a stack we'll only accept statuses like DELETE_IN_PROGRESS, DELETE_FAILED or DELETE_COMPLETE.

This is an example of the current output:

2013-10-27 12:37:48,057 - cumulus - INFO - Reading configuration from ./cumulus.conf
This will DELETE all stacks in the environment. This action cannot be undone. Are you sure you want to do continue? [N/y] y
2013-10-27 12:37:49,086 - cumulus - INFO - Deleting stack sdtest
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - DELETE_IN_PROGRESS
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE_CLEANUP_IN_PROGRESS
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - UPDATE_COMPLETE
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_IN_PROGRESS
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE_CLEANUP_IN_PROGRESS
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - UPDATE_COMPLETE
2013-10-27 12:37:50,719 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_COMPLETE_CLEANUP_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - UPDATE_COMPLETE
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - UPDATE_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - CREATE_COMPLETE
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitCondition - CREATE_COMPLETE
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitCondition - CREATE_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitCondition - CREATE_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::AutoScalingGroup - CREATE_COMPLETE
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::AutoScalingGroup - CREATE_IN_PROGRESS
2013-10-27 12:37:50,720 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::AutoScalingGroup - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - CREATE_COMPLETE
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::AutoScaling::LaunchConfiguration - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::EC2::SecurityGroup - CREATE_COMPLETE
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::EC2::SecurityGroup - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::AccessKey - CREATE_COMPLETE
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::AccessKey - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::AccessKey - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::User - CREATE_COMPLETE
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::User - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitConditionHandle - CREATE_COMPLETE
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitConditionHandle - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::IAM::User - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitConditionHandle - CREATE_IN_PROGRESS
2013-10-27 12:37:50,721 - cumulus - INFO - Stack sdtest - AWS::EC2::SecurityGroup - CREATE_IN_PROGRESS
2013-10-27 12:37:50,722 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::Stack - CREATE_IN_PROGRESS
2013-10-27 12:38:07,761 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitCondition - DELETE_COMPLETE
2013-10-27 12:38:07,761 - cumulus - INFO - Stack sdtest - AWS::CloudFormation::WaitCondition - DELETE_IN_PROGRESS