use six for python3 compatibility

See merge request nexedi/slapos!914

See merge request !913

Our schemas test check all files if they are present, but it so far it did not check
that the request and response schema referenced in software.cfg.json were really
existing and they were missing for some softwares.

This extends the test to check that request / response exists and add missing responses for cdn-me and srslte

See merge request !910

So that the test fail if they are missing.

monitor_v6_url and info_1 were not documented, monitor_v6_url is useless
since we have monitor_url and info_1 seems "self explanatory" for humans
and not targeted at machines.

also fix typo on publish-connection-informations

It's empty because the instance does not publish anything at this point.

See merge request nexedi/slapos!892

It allows to access monitoring with a monitoring web app.

If the service crash it will inform master by trigger a "bang" call

Learn more by reading: README.update-hash.rst

This repairs buildout profiles on python 2.

To backport the patch on old profiles, a simpler version is to append this to buildout.cfg :

```
[versions]
pyrsistent = 0.16.1
```

See merge request nexedi/slapos!908

some depends egg have special installation methods, we need more than
just listing the egg to install it.

1.0.167 can not longer be installed, 1.0.167.1 is 1.0.167 with a fix
backported.

pyrsistent has a setup_require of pytest-runner. Buildout installs
setup_require from their latest version, regardless of [versions]. When a
new version of pytest-runner was released without python 2 support this
broke installation of software releases on python 2.

This reverts commit c2a7ed05.

See merge request !907

`autorun` controls the `slapos-node-auto` service:
  - `running`: start `slapos-node-auto`
  - `stopped`: stop `slapos-node-auto`
  - ( else ) : leave `slapos-node-auto` as it is

See merge request !888

slapgrid is the old name of slapos node command.

This reverts commit b3394953.

See merge request !904

Jscrawler is a Nodejs app used to crawl a website and build the sitemap xml file.
Sitemaps are downloadable through http server deployed in the SR.