add bug_bash template (#12045)

.github/ISSUE_TEMPLATE/bug_bash.md

@@ -0,0 +1,39 @@
+---
+name: Bug Bash report
+about: Create a report about bug bash
+title: "[BUG Bash]"
+labels: bugbash, Mgmt
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+***Exception or Stack Trace***
+Add the exception log and stack trace if available
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+***Code Snippet***
+Add the code snippet that causes the issue.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Setup (please complete the following information):**
+ - Python Version: [e.g. Python 3.8]
+ - SDK Version: [e.g. azure-mgmt-resource-15.0.0b1]
+
+**Additional context**
+Add any other context about the problem here.
+
+**Information Checklist**
+Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report
+- [ ] Bug Description Added
+- [ ] Repro Steps Added
+- [ ] Setup information Added