This commit fixes some golint issues in `core/dnsserver`
and `middleware/kubernetes`.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Use @coredns.io were appropriate and clean up the list a little.

* commit for testing in cluster

* commit for testing in cluster

* refactor and add ns.dns record

* Release 007

* reduce heap allocations

* gofmt

* revert accidental Makefile commits

* restore prior rcode for disabled pod mode

* revert Makefile deltas

* add unit tests

* more unit tests

* make isRequestInReverseRange easier to test

* more unit tests

* addressing review feedback

* commit setup.go

* middleware/chaos: fix version

Move the version setting into a init function so it is done early. Then
tweak the setup code for chaos a bit to correctly pick this version up.
Add an integration test to pick this up in the toplevel test/ directory.

Fixes #667

* Update tests

Make the default target do nothing and put the actual release under a
'release' target. Prevent accidentally committing unwanted commits to
the repo.

Tested with `make -f Makefile.release -n`.

In CNCF, we are experimenting with FOSSA for license scanning on all of our projects.

https://app.fossa.io/reports/7d989803-8931-4221-a11f-330b7f333cdd

Latest refactoring fubar-ed Makefile.release. Fix the Linux build
target.

* middleware/file: correctly parse the stanza

Parsing the file stanza would give precedence to 'transfer' and ignore
other bits if it wasn't specified.

This change fixes the parsing. The actually external CNAME retrieval is
working fine (once the upstream is correctly parsed).

This wasn't caught in tests, because we lack a parsing test for this.

Fixes #657

* Add tests

Allows one to use `make -f Makefile.release build-arm` to just get an
Arm binary.

Check message for expired sig and don't cache those.

Aside: This hack of caching entire messages is probably something we
should stop doing at some point in the future and do this on a per RRset
basis.

Fixes #367 #635

Add vendor with `go dep`

This fix updates vendor with `go dep`
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

This fix adds vendor setup with `go dep`
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* update readme

* Add slack

Also add the slack channel.

* middleware/proxy: Kill goroutines on stop

Ports caddy's https://github.com/mholt/caddy/commit/59bf71c2932c3b814a6a1211c492a1aa9f71d4a1

Excludes the proxy_test.go test part though.

Fixes #644

* Add tests

* Revert "middleware/proxy: Make Unhealthy a pointer (#615)"

This reverts commit acbf522c.

* middleware/proxy: add proper locking

This add the proper locking around `Unhealthy`.

* add listen addr option

* Add listen address option to pprof

* There is configuration

* code styling

This method parses the Host field in the service. It returns 1 or 3
things 1) it is a host 2) an IPv4 address or an 3) IPv6 address.
This simplifies some code a bit and allows for 1 way of parsing the Host
field.

This *only* parse the Host field, Mail and/or Text values should be
checked separately.

We reuse the dns.TypeXXX values for this as to not invent anything new.

Url was wrong

Print corresponding error message when TLS initialization fails.

Add a MAINTAINERS file. It's not generated and not as elaborate (i.e. no
focus areas) as the one prometheus uses. But it's a start.

Generated with `git shortlog -s -n`, everyone with more than 5 commits.

Docs are put in `Makefile.release`.

Fixes #566

* Add fallthrough support for Kubernetes

This enables registering other services in the same zone as
Kubernetes services. This also re-orders the middleware chain
so that Kubernetes comes before other types, in order to make
this work out-of-the-box.

* Remove extra line

* Implements tracing in the native gRPC server

* Undo some unnecessary changes

* Properly revert trace/setup.go this time

* Some very very basic tests

* Remove warning for non-Trace middleware

This adds a simple reload test for the UDP socket.

* middleware/erratic: allow TC bit to be set

Add `truncate` as an option.

Fixes #593

* middleware/erratic: add delying queries

* Dont println

Pointer updates are atomic so drop the sync.RWMutex as it is not needed
anymore. This also fixes the race introduced with dfc71df0 (although I
believe this is the first time we properly tested that code path).

Add test for checking the additional section after a SRV query. Though
this wasn't fixed, but it is.

Fixes #609

middleware/metrics: allow multiple listeners

There was no inherent reason *not* to allow multiple listeners for the
monitoring data. Actually enforcing only one listener lead to more code
then just allowing multiple. It's probably not what you want; but
CoreDNS is happy to oblige.