Contour HTTPProxy support

Update Contributing Documentation

* Remove duplication of target ips for NodePort services with ExternalTrafficPolicy=Local

* Removed trailing lines

ns1: add minttlseconds

fix ingress-controller yaml link

Add quick start section to contributor docs

Update pull requests template

* Add section for linked issues
* Add checklist
* Do NOT include CHANGELOG updates as part of the checklist

Remove changelog from PR template

Fixes coverall, #1755

Add tutorial for GKE with workload identity

Add instructions for using GKE workload identity to allow ExternalDNS
to authenticate against Google Cloud DNS APIs. Add blog link to
README.
Signed-off-by: David Dooling <dooling@gmail.com>

Enable azure_private_dns to work with non "AzurePublicCloud" clouds

Move Inactive Maintainers To Emeritus Approvers

Add Cloudflare documentation on use of `--zone-id-filter`

Updated FAQ for usage of annotation-filter

Fix index out of range when hostname has no dots

docs: enhance pull request template

* Added unit tests to the checklist
* Added end user docs to the checklist
* Added link to the contributing docs
* Added section for description and issue links

provide documentation of available prometheus metrics