- update Make target; - update release workflow config; - update PR template (#2257)

Signed-off-by: Shuting Zhao <shutting06@gmail.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -10,6 +10,12 @@ chance substantial changes will be requested or that the changes will be rejecte
 You can discuss changes with maintainers in the [Kyverno Slack Channel](https://kubernetes.slack.com/).
 -->
 
+## Milestone of this PR
+<!--
+
+Add the milestone label by commenting `/milestone 1.2.3`.
+
+-->
 ## What type of PR is this
 
 <!--

.github/workflows/release.yaml

@@ -177,7 +177,8 @@ jobs:
 
   release-cli-via-krew:
     runs-on: ubuntu-latest
-    needs: release-kyverno-cli
+    needs: 
+    - create-release
     steps:
       - name: Checkout
         uses: actions/checkout@v2

Makefile

@@ -222,7 +222,7 @@ release:
 	kustomize build ./definitions > ./definitions/release/install.yaml
 
 release-notes:
-	@bash -c 'while IFS= read -r line ; do if [[ "$$line" == "## "* && "$$line" != "## $(VERSION)"* ]]; then break ; fi; echo "$$line"; done < "CHANGELOG.md"' \
+	@bash -c 'while IFS= read -r line ; do if [[ "$$line" == "## "* && "$$line" != "## $(VERSION)" ]]; then break ; fi; echo "$$line"; done < "CHANGELOG.md"' \
 	true
 
 kyverno-crd: controller-gen