Terraform-compliance

* Added new format support for terraform 1.0.1+ versions.

* Fixed a problem where `terraform-compliance` fails to recognise some resources on a 2+ multi-layered module structure.

* Added support for terraform 1.0.x versions.

* Added an auto-detection mechanism for terraform version while converting the plan. ([365](https://github.com/terraform-compliance/cli/issues/365) [#273](https://github.com/terraform-compliance/cli/issues/273) [#381](https://github.com/terraform-compliance/cli/issues/381) [MicrosoftDocs/azure-dev-docs#396](https://github.com/MicrosoftDocs/azure-dev-docs/pull/396) [documentation](https://terraform-compliance.com/pages/usage/#-tv---terraform-version))
* Updated the hashicorp public key. ([475](https://github.com/terraform-compliance/cli/issues/475))
* Fixed a problem where child_modules where not parsed in the plan file. ([478](https://github.com/terraform-compliance/cli/issues/478))

* Fixed an issue where [exclude resources tag](https://terraform-compliance.com/pages/bdd-references/using_tags.html#exclude-resources) were breaking due to improper `step_obj` creation from `Given` step. ([468](https://github.com/terraform-compliance/cli/issues/468))
* Disabled ssh host key checking for private repositories ([474](https://github.com/terraform-compliance/cli/issues/474))
* Fixed an issue where some complicated `plan.out.json` files were creating problems while getting parsed. Also improved performance especially on large plan files.
* Improved performance around 20x while parsing JSON entities. ([460](https://github.com/terraform-compliance/cli/issues/460))

* Upgraded python in Docker image from 3.7.3 (stretch) to 3.7.10 (buster)
* Enabled terraform 0.15 support.