- (bsc#1180473) [Build 20201230] postfix has invalid default config
(bsc#1181381) [Build 130.3] openQA test fails in mta, mutt -
postfix broken: "queue file write error" and "error: unsupported
dictionary type: hash"
Export DEF_DB_TYPE before starting the perl script.

- bsc#1180473 - [Build 20201230] postfix has invalid default config
Fixing config.postfix and sysconfig.postfix

- Update to 3.5.9
* improves the reporting of DNSSEC problems that may affect
DANE security

- Only do the conversion from the hash/btree databases to lmdb when
the default database type changes from hash to lmdb and do not
stop and start the service (the old compiled databases can live
together with the new ones)
- convert-bdb-to-lmdb.sh
- Clean up the specfile
* Remove < 1330 conditional builds
* Use generated postfix-files instead of the obsolete one from
postfix-SUSE.tar.gz
* Use dynamicmaps.cf.d instead of modifying dynamicmaps.cf upon
(de)installation of optional mysql, pgsql and ldap subpackages
* Use default location for post-install, postfix-tls-script,
postfix-wrapper and postmulti-script

- Set lmdb to be the default db.
- Convert btree tables to lmdb too. Stop postfix before converting from
bdb to lmdb