THis is a fixup of 4df39d83.

Also copy generated binary to buildout root's bin folder.

* rename enb-output.log to enb-info.log
* add host ID, FPGA version and kernel version in enb-info.log
* keep the 50 latest enb radio logs
* don't let enb-info execeed 500kB, but store up to 100MB of enb-info
  archives
  into another file

This is a fixup of cce1a1c9.

See merge request !1650

See merge request !1650

Fixup of a3e15fc4.

Before this patch SlapOS users had to manually add SSL files in case WCFS
was used in combination with NEO+SSL. This is bad as we can easily forget
to update local parameter files when updating instance parameters ("_ca",
"_cert" and "_key"). This builds up on 706801f2.

/reviewed-by @kirr @jerome
/reviewed-on !1620