Convert to GitLab CI button sends incorrect file path

Issue

Convert to GitLab CI button makes an api call to start the workflow. The api call requires relative file path of the Jenkinsfile to read the file.

Steps to reproduce

1. Enable DW FFs, duo_workflow and duo_workflow_in_ci
2. Open a repository having Jenkinsfile at any other location apart from root folder in the main branch.
3. Click on the Convert to GitLab CI button.
4. Checkout pipeline logs to see the error.

Expected behaviour

The api call should have relative file path of the file instead of file name