The subsystem of a metric must be it's plugin name. "dns" is reserved
for the core. Use a const convention to avoid copy-paste mistakes in
naming.

Fix dns64 and acl plugin.
Signed-off-by: Ben Kochie <superq@gmail.com>

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Replace doc CI test with automatic workflow.
Signed-off-by: Ben Kochie <superq@gmail.com>

Mostly `go get -u`, but rolled back k8s and etcd changes due to some
dependency chaining issues.
Signed-off-by: Ben Kochie <superq@gmail.com>

* introduce metric naming test
Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

* Update metrics.go
Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

* Update k8s.io/[api|apimachinery|client-go] to v0.18.0

This PR updates k8s.io/[api|apimachinery|client-go] to v0.18.0

This PR closes 3791
This PR closes 3792
This PR closes 3793
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix test failures
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix failed tests
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix test failure
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.29.29 to 1.29.34.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-go/compare/v1.29.29...v1.29.34)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Move this to .circlci where it's used.
Signed-off-by: Miek Gieben <miek@miek.nl>

Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

* Update README.md
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

* fix readme occurances
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

Signed-off-by: Ben Kochie <superq@gmail.com>

* Add 1.7.0 notes already

This is the work-in-progress release notes for 1.7.0, adding it now so
we can craft it will we work towards 1.7.0.

Notes currently yell that 1.7.0 is backwards incompatible.
Signed-off-by: Miek Gieben <miek@miek.nl>

* Update notes/coredns-1.7.0.md
Co-Authored-By: Ben Kochie <superq@gmail.com>
Co-authored-by: Ben Kochie <superq@gmail.com>

Run make -f Makefile.doc in CircleCI to test that man pages are updated
in PRs.
Signed-off-by: Ben Kochie <superq@gmail.com>

Minor typo and improvements to the dns64 plugin README.
Signed-off-by: Ben Kochie <superq@gmail.com>

Cleanup a variety of metric issues.
* Eliminate department of redundancy "count_total" naming.
* Use the plural of the unit when appropriate. (ex, "requests")
* Remove label names from metric names where appropriate. (ex, "rcode")
* Simplify request metrics by consolidating type label in to the base
request counter.
* Re-generate man pages.
Signed-off-by: Ben Kochie <superq@gmail.com>
Co-authored-by: Ben Kochie <superq@gmail.com>

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

* Add dns64 plugin

Add external plugin to core in-tree.
* Pull code from upstream: https://github.com/serverwentdown/dns64
* Update docs.
Signed-off-by: Ben Kochie <superq@gmail.com>

* Make dns64 consistent.
Signed-off-by: Ben Kochie <superq@gmail.com>

* Cleanup README
Signed-off-by: Ben Kochie <superq@gmail.com>

* Cleanup minor issues.
Signed-off-by: Ben Kochie <superq@gmail.com>

* Remove proxy method.
Signed-off-by: Ben Kochie <superq@gmail.com>

* dns64: big cleanup

* Make the code a bit more idiomatic
* Add tests
* use proper Upstream API
Signed-off-by: Casey Callendrello <c1@caseyc.net>
Signed-off-by: Ben Kochie <superq@gmail.com>

* A little more clenaup

* Fix some docs.
* Use the correct plugin register method.
* Cleanup some review items.
Signed-off-by: Ben Kochie <superq@gmail.com>

* Add metrics counter for DNS64 translations

Add a basic counter of how many DNS64 translations have been completed.
Signed-off-by: Ben Kochie <superq@gmail.com>

* Add DNSSEC bug link
Signed-off-by: Ben Kochie <superq@gmail.com>

* Test cleanup
Signed-off-by: Ben Kochie <superq@gmail.com>

* dns64: more test cleanup
Signed-off-by: Casey Callendrello <c1@caseyc.net>
Co-authored-by: Casey Callendrello <c1@caseyc.net>

Signed-off-by: zounengren <zounengren@cmss.chinamobile.com>

See #3727 for the details. Copying release notes
verbatim to coredns-1.6.9.md and fix the release script (because
Makefile are stupid). Up version to 1.6.9 here as well.
Signed-off-by: Miek Gieben <miek@miek.nl>

Signed-off-by: Miek Gieben <miek@miek.nl>

We should really release. I'm setting the date to today, and kick off a
release after this is merged.
Signed-off-by: Miek Gieben <miek@miek.nl>

Start using latest Go for .travis.
Signed-off-by: Miek Gieben <miek@miek.nl>

Bumps [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) from 1.29.24 to 1.29.29.
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-sdk-go/blob/master/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-go/compare/v1.29.24...v1.29.29)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.28 to 1.1.29.
- [Release notes](https://github.com/miekg/dns/releases)
- [Changelog](https://github.com/miekg/dns/blob/master/Makefile.release)
- [Commits](https://github.com/miekg/dns/compare/v1.1.28...v1.1.29)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Automatically submitted.

* fix negative cache masking cases
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

* remove unecessary param
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.17.3 to 0.17.4.
- [Release notes](https://github.com/kubernetes/client-go/releases)
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](https://github.com/kubernetes/client-go/compare/v0.17.3...v0.17.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/miekg/dns](https://github.com/miekg/dns) from 1.1.27 to 1.1.28.
- [Release notes](https://github.com/miekg/dns/releases)
- [Changelog](https://github.com/miekg/dns/blob/master/Makefile.release)
- [Commits](https://github.com/miekg/dns/compare/v1.1.27...v1.1.28)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/golang/protobuf](https://github.com/golang/protobuf) from 1.3.4 to 1.3.5.
- [Release notes](https://github.com/golang/protobuf/releases)
- [Commits](https://github.com/golang/protobuf/compare/v1.3.4...v1.3.5)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>