dep--fluent-bit was just a development package with less dependencies

OBS_PROJECT will be by default the branch project of our production
project : home:VIFIBnexedi:branches:home:VIFIBnexedi

Then if everything compile fine on the branch project, we will submit
the package on OBS website.

See https://www.debian.org/doc/manuals/maint-guide/dother.en.html#dirs

See merge request nexedi/slapos.package!164

lunzip is used as a basic example.

See merge request nexedi/slapos.package!168

we use https only starting from debian 11

with backported fixes for debian 11 compatibility

fixup for 203927d9

The old dsc was not removed correctly

See merge request nexedi/slapos.package!166

fixup for 203927d9

The old tarball was not removed correctly

These crontabs were using execfile which has been removed on python 3.

Switch to `slapos console script.py` syntax which was introduced in
slapos 1.4.5

See merge request nexedi/slapos.package!167

fixup for 203927d9

The directory must be correct in slapos.spec.