Create bug_report.md

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Tell us about a problem you are experiencing
+
+---
+
+/kind bug
+
+**What steps did you take and what happened:**
+[A clear and concise description of what the bug is.]
+
+
+**What did you expect to happen:**
+
+
+**Anything else you would like to add:**
+[Miscellaneous information that will assist in solving the issue.]
+
+
+**Environment:**
+
+- cloudstack-csi-driver version: 
+- Kubernetes version: (use `kubectl version`):