Merge pull request #277 from duanmengkk/add_pull_template

add pull template

Author: Iceber

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,32 @@
+**What type of PR is this?**
+
+<!--
+Add one of the following kinds:
+
+/kind api-change
+/kind bug
+/kind cleanup
+/kind deprecation
+/kind design
+/kind documentation
+/kind failing-test
+/kind feature
+/kind flake
+
+-->
+
+**What this PR does / why we need it**:
+
+**Which issue(s) this PR fixes**:
+Fixes #
+
+**Special notes for your reviewer**:
+
+**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.
+-->
+```release-note
+
+```