Create issue from Vulnerability links to commit

What does this MR do?

This MR changes the behavior of the Create Issue from a Vulnerability. Previously, the link to the file in the created issue linked to the current default branch because the controller was looking for the blob_path in the wrong place. This MR adds the location data for the blob_path as well, which is where the UI includes the data in its response.!

Screenshots

Screen_Shot_2020-07-06_at_5.06.02_PM

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done