Merge pull request Kong#295 from Kong/update-readme

docs(readme) update list of supported distros

Merge pull request Kong#307 from Kong/chore/docker-kong-compatibility

chore(docker) fix kong-build-tools w\ docker-kong compatibility

Merge pull request Kong#301 from Kong/chore/amazonlinux2

chore(amazonlinux2) put amazonlinux2 assets in separate directory on bintray

Merge pull request Kong#292 from Kong/feat/ubuntu-20-04

feat(ubuntu) add Ubuntu focal focus as a target

Merge pull request Kong#283 from Kong/fix/systemd-test

fix(systemd) pin the systemd ubuntu version

Merge pull request Kong#281 from Kong/feat/go-plugin-builder

feat(go-plugin) push go-plugin builder docker images on official releases only

Merge pull request Kong#279 from Kong/feat/docker-release-only

feat(release) ability to only release unofficial docker images

Merge pull request Kong#273 from Kong/chore/pin-nginx-module

feat(nginx-module) add the ability to pin the kong nginx module

Merge pull request Kong#272 from Kong/fix/next-issues

fix(packaging) fix some build packaging errors

fix(docker-kong) adjust Kong-build-tools to be compatible with docker…

…-kong compatibility (Kong#270)

* chore(docker-kong) adjust Kong-build-tools to be compatible with docker-kong

* chore(docker-kong) redhat compatibility