Include server binaries in failure artifacts

Build in subdir to keep objects separate from source
3 jobs for artifacts in 4 minutes and 24 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
canceled #6172
build-gnutls-mit-standalone-lloadd

00:04:23

passed #6170
build-no-threads-no-slapd

00:04:09

canceled #6171
build-openssl-heimdal-lloadd

00:04:23