* no need to wait for 10 seconds of detection failure.
* libzmq can be used in other components.

* also disable lua explicitly. anyway lua 5.3 cannot be used with trafficserver 4.2.3.
* also cleanup.

FYI, at least following programs are currently referred in SRs :

- basename
- cat
- cp
- date
- dirname
- echo
- ls
- md5sum
- rm
- sort
- tail
- test
- tr
- uname

This software release install all git repositories, firefox, nginx and nodejs.
It configure jio/renderjs development environnment.
Finally, it provides a runTestSuite script to easily publish results in ERP5.

Firefox is controlled with Selenium WebDriver, to launch qunit tests and parse results.

Monitoring stack, included in webrunner and KVM SR

/reviewed-on nexedi/slapos!66

otherwise system libdb can be linked.

/reviewed-by @kirr
/reviewed-on nexedi/slapos!62