Update issue templates

Author: rstoyanchev

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,28 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 'status: waiting-for-triage'
+assignees: ''
+
+---
+
+<!--
+Thanks for providing feedback. Please, review the following:
+
+**Security Vulnerability?**
+STOP and go to https://pivotal.io/security to disclose security issues responsibly.
+
+**Question?**
+This is the place to report issues and request enhancements. If you have a question about why something is not or how to do something, please use Stack Overflow.
+
+**Issue vs Pull Request**
+Do not create both. You can however start with an issue, and later decide to submit a pull request, in which case the issue will be closed as superseded by the pull request.
+
+**Bug report (do not copy/paste)**
+Please provide details of the problem, including the Spring Framework version. If possible, please provide a test case or sample application that reproduce the problem. This makes it much easier for us to diagnose the problem and to verify that we have fixed it.
+
+**Enhancement (do not copy/paste)**
+Please start by describing the problem that you are trying to solve. There may already
+be a solution, or there may be a way to solve it that you hadn't considered.
+-->