Add keilerkonzept/terraform-module-versions

[nitrocode]

https://github.com/keilerkonzept/terraform-module-versions

Note: This may pull in pre-release versions so each version bump should be checked to make sure the latest versions are non-pre-release.

✗ go get https://github.com/keilerkonzept/terraform-module-versions

✗ terraform-module-versions list components/terraform/alb-controller/
|   TYPE   |     NAME     | CONSTRAINT | VERSION |                       SOURCE                       |
|----------|--------------|------------|---------|----------------------------------------------------|
| registry | this         | 0.25.0     | 0.25.0  | cloudposse/label/null                              |
| registry | eks_iam_role | 0.10.1     | 0.10.1  | cloudposse/eks-iam-role/aws                        |
| registry | eks          | 0.19.0     | 0.19.0  | cloudposse/stack-config/yaml//modules/remote-state |
| local    | iam_roles    |            |         | ../account-map/modules/iam-roles  

✗ terraform-module-versions check .
| UPDATE? |       NAME        | CONSTRAINT | VERSION | LATEST MATCHING | LATEST |
|---------|-------------------|------------|---------|-----------------|--------|
| (Y)     | kms_key_efs       | 0.11.0     | 0.11.0  |                 | 0.12.0 |
| (Y)     | eks               | 0.21.1     | 0.21.1  |                 | 0.22.0 |
| (Y)     | gbl_dns_delegated | 0.21.1     | 0.21.1  |                 | 0.22.0 |
| (Y)     | vpc               | 0.21.1     | 0.21.1  |                 | 0.22.0 |

Credit @srhopkins for mentioning this golang tool

[sgreben]

@nitrocode thanks for the proposal :) should it maybe have pre-release versions behind a flag and ignore those by default? --pre-release or something

[nitrocode]

Hi @sgreben. Thanks for building this tool. i think pre-releases should be ignored by default and should be shown only when there is a flag present like the one you suggested above.

[nitrocode]

@sgreben is there a way to show a non zero exit code when checking a root module's module versions?

[sgreben]

@nitrocode re:nonzero exit - yeah, there are the flags

 -any-updates-found-nonzero-exit=false  exit with a nonzero code when modules with updates are found (ignoring version constraints)
  -n=false                               (alias for -any-updates-found-nonzero-exit)
  -updates-found-nonzero-exit=false      exit with a nonzero code when modules with updates matching are found (respecting version constraints)
  -e=false                               (alias for -updates-found-nonzero-exit)

so e.g. terraform-module-versions check -n . will return with a nonzero exit code. The difference between -e and -n is whether the updates must match the constraint specified in the version parameter of the respective module call.

[sgreben]

@nitrocode i just added --pre-release (false by default) in the last release. Unless that is set, pre-release versions are not considered :)