[dist] do not fail on OBS appliances which do not have an OBS LVM VG yet
[dist] fix http ssl certificate directory
[api] raise api version to 2.4.0
[webui] do not verify SSL for localhost to get appliances working again
[dist] do not fail when sysconfig file is missing
[api] fix rendering of group entries in /webui/owner search
[api] fix case when multiple root projects are defined for owner search
[api] webui owner search: do not deliver groups and persons anymore, but detected filter rules (on command of henne)
[api] fix import of old distributions.xml file when using rpm packages
[api,webui] do not require ci_reporter unless test env
[api] pluralize filter roles for webui
[dist] take care of configured backend dir in obsstoragesetup
[backend] BSHTTP: support mode in cpio sender/receiver
[backend] src server: implement sslcert management
[backend] implement followup job handling in signer and worker
[backend] also recreate the sslcert when recreating the privkey
[backend] product converter: die when a used condition is not defined.
[api] avoid double listings in results of owner search
[backend] productconverter: fix wording in flavor package README
[backend] take swap space into account for memory requirements in constraints