terraform: Add support for multiple variables_file

[m-yosefpor]

SUMMARY

Add support for multiple variables_file as we can pass multiple var-files in terraform cli:
terraform apply -var-file="file-1.tfvars" -var-file="file-2.tfvars" -var-file="file-3.tfvars"

ISSUE TYPE

• Feature Idea

COMPONENT NAME

terraform module

ADDITIONAL INFORMATION

In many projects there are multiple variable files which are needed to be passed to terrform, but right now, the terraform module only supports a single file ( type "path"). But it could be ( type "list")

Expected usage:

- name: Terraform with multiple variables_file(s)
  terraform:
    project_path: '/home/centos/terraform'
    variables_file: 
      - "/home/terraform/overrides/file-1.tfvars"
      - "/home/terraform/overrides/file-2.tfvars"
      - "/home/terraform/overrides/somepath/file-3.tfvars"
    targets: some-target

[ansibullbot]

Files identified in the description:

• plugins/modules/cloud/misc/terraform.py

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

click here for bot help