Implementation of GitLab Data Collection Worker & Test Coverage Improvement

The primary goal of this project is to congregate data pertaining to GitLab issues, commits, merge requests amongst other entities & store it into the unified data model ecosystem of Augur. The project will use a task queue, a broker and worker instances to process the information at scale. Metrics for sustainability &. overall project health will be built upon the information stored in the unified model. This project also aims at increasing the overall test coverage of the project. Ergo, Unit & Integration tests for data collection workers would be implemented to ensure data consistency.