[Piuparts-devel] some exception updates for buster

[Andreas Beckmann]

6c08cbcc0 p.conf.anbe: --merged-usr tarballs for stretch
067d52ce5 p.conf.anbe: add [stretch2buster-merged-usr]
ff8bae52b p.conf.anbe: all jessie->stretch tests go from jessie-lts to stretch-next
de53ed2b9 p.conf.anbe: all wheezy->jessie tests go from wheezy-lts to jessie-lts
02a7ab36c p.conf.anbe: prepare multi-distro-upgrade tests for bullseye
08b67a67e add logrotate exception for chef-solr/wheezy
a7cfb47d3 skip testing libdbd-oracle-perl/contrib, third-party dependencies
aa28a383c rework the isdnutils/lenny,squeeze exceptions
b738f5822 freebsd-buildutils/lenny,squeeze needs the original-awk workaround
898a7e94e fusionforge-plugin-mediawiki/jessie is an uninstallable cruft package
9b042f25a llvm-3.7-examples/stretch is uninstallable on !arm