0.40.0 Missing arguments to pass existing security groups

[z0rc]

#119 completely removed option to pass existing security groups to cluster, it just allows to create a new SG. Please revert this decision.

[nitrocode]

Please see comment #119 (comment)

[z0rc]

Okay, it's called security_groups now. Why this kind of change happened in minor release is unexciting.

[nitrocode]

@z0rc This is all part of standardizing usage of the security group module across all of the cloudposse modules. We had similar growing pains with bringing context.tf. We'll work on our upgrade process more going forward. If you have suggestions, please let us know in our slack community.

If other issues come up, please file a new ticket.

[Nuru]

@z0rc We are taking feedback like yours into account and have marked v0.40.0 pre-release. We recommend using 0.39.0 for now and waiting for a later release which will provide better backward compatibility and clearer migration instructions.