Add issue template

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,21 @@
+<!--
+Note that this is the issue tracker for Kubevirt.
+-->
+
+[provide a description of the issue]
+
+##### Version
+[provide output of oc get deployment -o yaml -n kube-system | grep kubevirt]
+
+##### Steps To Reproduce
+1. [step 1]
+2. [step 2]
+3. [step 3]
+
+##### Actual Result
+
+##### Expected Result
+
+##### Additional Information
+[consider attaching the output of `$ oc get pod/vm/vmi -o json -n <namespace>` command to the issue]
+[visit https://kubevirt.io/user-guide/]