* plugin/log: remove need to specify stdout
Since log will only be output to stdout is doesn't make sense to
specify it in Corefile.
Fixes: #1218
* fixup! plugin/log: remove need to specify stdout
Add a full test server impl in this new package + tests. Move
dnsrecorder into this package as well and finish up the commented out
tests that were left in the old dnsrecorder package.
Update all callers and tests.
* Rename middleware to plugin
first pass; mostly used 'sed', few spots where I manually changed
text.
This still builds a coredns binary.
* fmt error
* Rename AddMiddleware to AddPlugin
* Readd AddMiddleware to remain backwards compat
