pull_request_template.md

What does this PR do?

Describe your changes

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Tests
[ ] Other

How should this be manually tested?

What are the relevant pivotal tracker stories?

Pivotal Tracker Link

Screenshots (if is appropriate)