Merge pull request #5072 from hashicorp/issue-template

Deflect some issues  which are not bugs

.github/ISSUE_TEMPLATE.md

@@ -1,8 +1,12 @@
+_Please read these instructions before submitting_
+
 **DELETE THIS TEMPLATE BEFORE SUBMITTING**
 
 _Only use Github issues to report bugs or feature requests, see
 https://www.packer.io/community.html_
 
+For example, _Timeouts waiting for SSH/WinRM_ are generally not bugs within packer and are better addressed by the mailing list. Ask on the mailing list if you are unsure.
+
 If you are planning to open a pull-request just open the pull-request instead of making an issue first.
 
 FOR FEATURES:
@@ -19,3 +23,4 @@ Describe the problem and include the following information:
   Please paste this in a gist https://gist.github.com
 - The _simplest example template and scripts_ needed to reproduce the bug.
   Include these in your gist https://gist.github.com
+