Partially revert "playbook: make sure gpg package is installed before adding and removing package keys"

Changes to upload-to-cache were done by mistake

It has backported fix for name clash in etc/services, which were result with
apache not being able to restart.

See merge request !121

It has backported fix for name clash in etc/services, which were result with
apache not being able to restart.

In a test environment build time can vary significantly based on load of machine. Prevent false failures.

full software compilation from scratch the time to build site is a bit
more than 10h (in crowded testnode infrastructure!). This test was passing ONLY in
cases when shacache download of SR was used but now shacache is
intentionally NOT used thus increase accordingly.

few times before giving up.

See merge request !120

 few times before giving up.

@tomo can you please accept.

See merge request !119

/reviewed-on !117

properly setuped (automatically).
Add tests for this.

/reviewed-on !116

/reviewed-on nexedi/slapos.package!110

/reviewed-on nexedi/slapos.package!115

  it doesn't work as erp5.git repository is outdated and it cannot be upgraded for now.

The firewall which comes with Suse by default leads to not working re6stnet
connectivity, so drop it.

  The gpg is normally pre-installed already, so no need to install it.

  Set re6st as present to prevent unintented upgrade of re6st on this loop.

playbook: no need to remove legacy repositories anymore as it has been a very long time since any machine installed them

Caddy doesn't support the wildcard Virtual Host like Apache so it's not
suitable for standalone deploy.

On newest OS, python2.7 is not installed anymore.

There is not reason to not check endpoint certificate.

Thanks to injecting slapos.networkcache to provided buildout, it will be
possible to use networkcache for fetching the dependencies.

/reviewed-on nexedi/slapos.package!112