* Add a template plugin
The template plugin matches the incoming query by class, type and regex
and templates a response with go templates.
* Fix go style errors
* Fix template README example
* Fix corefile example in plugin/template
* Clarify plugin/template/README.md
Add more details and external links where needed.
* Fix code issues in plugin/template
* Add template metrics
* Add section and template to template plugin metrics
* Fix style / remove extra newline on go imports
* Fix typo in plugin/template/README.md
* Update README.md
I've change the format a bit in a PR that I merged yesterday.
* Add authority section to plugin/template
* Fix naming of incoming query name in plugin/template/README.md
* Fix doc syntax in plugin/template/README.md
* Add authority section to plugin/template/README.md config overview
* Add metric labels to plugin/template/README.md metrics section
* Use request.Request to pass state to the template matcher
