Update launchd template (#346)

* Update XML prolog and DTD

Also converts single-quotes to double-quotes

* Remove whitespace from parent dict

* Only populate EnvironmentVariables when available

* Only add additional arguments when defined

Also cleans up whitespace around each argument

* Cleanup whitespace and only populate when defined

* Convert remaining spaces to tabs

* Sort keys. Similar to `plutil -convert xml1`

aix issue 242: improved test, if process runs as child of srcmstr (#302)

Co-authored-by: xca1075 <Christoph.Buescher@atruvia.de>

service: go fmt

Added LimitNOFILE option in systemd configuration (#94)

Co-authored-by: Daniel Theophanes <kardianos@gmail.com>

remove dep on osext