[1.0 breaking change] - Don't generate sqlite metadata by default about createrepo_c

[j-mracek]

I also support to change the default to not generate yum database as default. Note - such a change cannot be back-ported to RHEL.

[dralley]

Suggestion - given the changes proposed for "1.0" in https://lists.fedoraproject.org/archives/list/[email protected]/thread/25J55FCQKTMCEOBS7EZCTP34RKLUOUQ3/, I propose we go a tiny bit further.

• The --database and --no-database options could be dropped entirely in favor of users deliberately calling sqliterepo_c

  • EL7 is the only significant beneficiary, and EL7 will be EOL in a year
  • As per the proposal that was submitted to fedora-devel, createrepo_c would not necessarily generate EL7-compatible repos by default due to the treatment of comps metadata anyway - this would be an even less disruptive than that as yum is perfectly capable of handling repos without sqlite metadata, it is merely preferred if present.

• sqliterepo_c could be split into a new package so that it could be dropped at some point in the future without breaking createrepo_c's semantic versioning

  • Or maybe it makes sense to just remove entirely, now, as per the above points? Splitting the package off is just a conservative option.

Pulp currently does use createrepo_c's sqlite metadata support, but we're going to drop it in the near future.