we need to be explicit for extras.
Ping egg.

Replace `softwaretype` recipe with `switch-softwaretype`

These comments are not updated automatically and very hard to update manually,
so it's better not to have them.

This section installs a slapos command with network cache enabled, for
softwares using an embedded slapos.

Only install required eggs, drop unused [testnode] section

The error was :

 Error: The following paths are already installed by other sections:
 {'/opt/slapgrid/4eb4146f38fc86ed2ad060217a1a95a6/bin/slapos-watchdog':
 'extra-eggs',
 '/opt/slapgrid/4eb4146f38fc86ed2ad060217a1a95a6/bin/networkcache-download':
 'slapos-cookbook',
 '/opt/slapgrid/4eb4146f38fc86ed2ad060217a1a95a6/bin/slapos':
 'extra-eggs',
 '/opt/slapgrid/4eb4146f38fc86ed2ad060217a1a95a6/bin/generate-signature-key':
 'slapos-cookbook',
 '/opt/slapgrid/4eb4146f38fc86ed2ad060217a1a95a6/bin/networkcache-upload':
 'slapos-cookbook'}

  Remove duplicated version definition at software level to prevent excessive duplication
  of the value.

They are dependencies of slapos.toolbox and we already agreed to put slapos.toolbox version in a shared file.

/cc @jerome @jm

/reviewed-on !502

/reviewed-on !427

also use a real bash and not busybox

Finally, last change in erp5testnode is not needed, it was just required
to fix seleniumrunner software

 zc.buildout version up to 2.5.2+slapos012
 slapos.recipe.template version up to 4.3
 slapos.core version up to 1.4.4

It provides fix to call correct endpoints (Distributor instead of a Tool).

/reviewed-on !260

  If someone is developing an erp5 test node inside a webrunner, there is no reason to put entire data on resilience.

Since release of ipython 6.0.0 (
https://pypi.python.org/pypi/ipython/6.0.0 ) ipython became incompatible
with python < 3.3, so its version needs to be pinned.

  Upgrade officially all SR to latest zc.buildout version.