Release 0.22.9

# History

## 0.22.9

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.9/bootstrap.sh
sudo DOKKU_TAG=v0.22.9 bash bootstrap.sh
```

### Bug Fixes

- #4334: @josegonzalez allow git pushes to apps that already exist but have old names
- #4335: @josegonzalez Add error checking to plugin:install and plugin:update
- #4338: @josegonzalez Strip trailing slashes in hostname from web installer
- #4332: @josegonzalez Correct aws release check in release-plugin script
- #4311: @nisseknudsen Allow named volume mounts in regex
- #4320: @josegonzalez Hardcode cnb workdir to /workspace

### New Features

- #4321: @josegonzalez Add git version to output

### Refactors

- #4329: @josegonzalez Standardize apt-get usage

### Documentation

- #4323: @stianlik Fix typo in nginx documentation

### Tests

- #4331: @josegonzalez Switch to upstream bats-core
- #4330: @josegonzalez Switch to using uuidgen for unique app names

### Other

- #4325: @WaviestBalloon Updated bootstrap.sh to not show when $DOKKU_TAG equals nothing
- #4324: @dependabot-preview[bot] chore(deps): bump socket.io from 3.0.5 to 3.1.0 in /tests/apps/.websocket.disabled
- #4319: @josegonzalez Update ruby dependencies in test app
- #4312: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 187 to 188 in /tests/apps/php

docs/development/release-process.md

@@ -29,7 +29,7 @@ The workflow looks like this:
 ```shell
 # having dokku-arch in ../dokku-arch
 vagrant up build-arch
-# wait for "==> build-arch: ==> Finished making: dokku 0.22.8-2 (Mon Feb 22 23:20:37 CET 2016)"
+# wait for "==> build-arch: ==> Finished making: dokku 0.22.9-2 (Mon Feb 22 23:20:37 CET 2016)"
 cd ../dokku-arch
 git add PKGBUILD .SRCINFO
 git commit -m 'Update to dokku 0.9.9'