Terraform Parser

[joaotgoncalves]

Created the parser for Terraform files. In this pull request is also included the merge from IR Extension PR, to have the desired intermediate representation. The actual version of the parser is parsing Terraform resources, data sources, input variables, local values, output values, module blocks and comments.

The following example shows some terraform code and its corresponding parser

resource "aws_instance" "demo" {
    ami = "ami-00831fc7c1e3ddc60"
    instance_type = "t2.micro"
    Tags {
        Name = "ExampleEc2Instance"
    } 
}

Parsed example:

[Nfsaavedra]

Besides the single comment I did, the code looks good to me. However, we should have integration tests for Terraform for each of the smells already implemented. Also, it would be nice to add unit tests for some edge cases that you found in the parsing (it is not done for the other technologies but should be considered in the future) -- I do not consider the unit tests urgent, but if it is simple please do it. Also, please update the README to add the Terraform technology, namely, this line:

glitch --tech (chef|puppet|ansible) --csv --config PATH_TO_CONFIG PATH_TO_FILE_OR_FOLDER

[Nfsaavedra]

LGTM, very nice job :) The test set seems very complete. Please just change the indentation in the comments.tf file! We should wait for @jff review and if the code looks good to him as well, we can merge.

[jff]

This is fine, but it might be a good idea to include versions (perhaps the best is to create a separate issue for that). Otherwise, we might have issues in a near future related to incompatible versions.

[Nfsaavedra]

I will open a issue for that

[jff]

LGTM! Thanks a lot for this! 👏