Add pull request template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,34 @@
+**What this PR does / why we need it**:
+<!--
+Add detailed explanation of what this PR does and why it is
+needed.
+-->
+
+**Which issue(s) this PR fixes**:
+<!--
+Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
+-->
+Fixes #
+
+**Describe testing done for PR**:
+<!--
+Example: Created vSphere workload cluster to verify change. 
+-->
+
+**Special notes for your reviewer**:
+<!--
+Add any things that reviewers should be aware of as they review
+your PR.
+
+Example: Please verify how I handled foo aligns with overall plan.
+-->
+
+**Does this PR introduce a user-facing change?**:
+<!--
+If no, just write "NONE" in the release-note block below.
+If yes, a release note is required:
+Enter your extended release note in the block below.
+-->
+```release-note
+
+```