Add support for Terraform v0.12 #5

[ingwarr]

Fixes #5

[Jberlinsky]

Tests fail on localhost as provided. The following additional change needs to be made:

• In Makefile, the DOCKER_TAG_BASE_KITCHEN_TERRAFORM variable must be updated to 2.0.0 so that the tests run against Terraform 0.12.x.

In general, please make sure that module tests are run before pull requests are submitted. I've created #7 to ensure that we get CI set up in a timely manner for this module.

[Jberlinsky]

• CHANGELOG needs to be updated
• README needs to be updated
• Linting needs to be run

[ingwarr]

I run tests without docker before the push

[Jberlinsky]

@ingwarr While I appreciate that, the contribution guidelines linked to in the README specifically encourage running tests in Docker. We should not merge a pull request with broken tests when executing in the documentation-suggested manner.

[ingwarr]

@Jberlinsky Re-test Done

[ingwarr]

This still doesn't look like terraform fmt or our linting make task was run.
@Jberlinsky I run terraform fmt without any results even if I manually added additional spaces, terraform fmt undo my changes.

[ingwarr]

[ingwarr]

@Jberlinsky command find . -type f -name "*.tf" -exec terraform fmt {} \; haven't brought any result

[ingwarr]

[bohdanyurov-gl]

Please squash all commits and add screenshots for tests after applying changes.