Merge newer dovecot for Cosmic

[Christian Ehrhardt ]

For reasons outlined in bug 1771524 we won't merge 2.3.x just yet.
So reconsider merging the latest 2.2.x to have the work on mail-stack-delivery done.

This will simplify the 2.3.x move later on to be focused on just that.

[Christian Ehrhardt  (paelzer)]

CVEs are all in.
Also all other assumptions of bug 1771524 still hold true in regard to mail-stack-delivery.

The only thing not needed here is for the config changes and pam login issue sin 2.3.1

[Christian Ehrhardt  (paelzer)]

Need to re-eval Lucene issues with 2.2.35-2

[Christian Ehrhardt  (paelzer)]

 #
Related PPA is: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3265/+packages

[Christian Ehrhardt  (paelzer)]

MP is up at https://code.launchpad.net/~paelzer/ubuntu/+source/dovecot/+git/dovecot/+merge/345759

[Christian Ehrhardt  (paelzer)]

FYI: In Cosmic-Proposed now

[Launchpad Janitor (janitor)]

This bug was fixed in the package dovecot - 1:2.2.35-2ubuntu1

---------------
dovecot (1:2.2.35-2ubuntu1) cosmic; urgency=medium

  * Merge with Debian unstable (LP: #1771816). Remaining changes:
    - Add updated autopkgtest to debian/tests/* (these tests got simplified
      and streamlined to use the packages default configuration which solves
      LP: #1638865)
  * Dropped Changes (now upstream)
    - SECURITY UPDATE: rfc822_parse_domain Information Leak Vulnerability
    - SECURITY UPDATE: TLS SNI config lookups DoS
    - SECURITY UPDATE: Memory leak that can cause crash due to memory exhaustion
  * Dropped Changes (no more needed after 18.04)
    - handle conffile removal of /etc/init/dovecot.conf (due to dropping
      upstart).
  * Dropped Changes (no more needed)
    - Drop build dependency on libstemmer-dev (universe) - this is now in main
    - Disable dovecot-lucene plugin as it had various issues and is deprecated
      in favor of solr anyway (LP 1524526) - no more failing in Cosmic.
  * Dropped Changes (mail-stack-delivery)
    It was decided to no more carry mail-stack-delivery as a package in favor
    to out-of-package solutions. It became less useful due to one of the
    biggest benefit (auto-ssl setup) being part of the base setup now.
    - Add mail-stack-delivery
      - add package in d/rules, d/control
      - add d/*mail-stack-delivery* maintainer scripts and default conf
      - d/mail-stack-delivery.preinst: Move previously installed backups and
        config files to a new package namespace.
      - d/mail-stack-delivery.README.Debian clarified use of configuration files
    - d/mail-stack-delivery.postinst: Use ssl key/cert paths now set up by
      dovecot-core; transition for such configs formerly set up by
      mail-stack-delivery to use the new default ssl config (if user had no
      conffile change or choses new defaults).
    - d/mail-stack-delivery.postinst: if moving dovecot to the new defaults on
      upgrade, also move the related postfix key/cert entries.
    - debian/99-mail-stack-delivery.conf: do not explicitly enable protocols
      as all installed are auto-included from the base config now.
    - adapt autopkgtests to match new version.
    - d/control: for the ssl transition to work we need to ensure dovecot-core
      is complete before upgrading mail-stack-delivery, so add a Pre-Depends.
    - d/mail-stack-delivery.postinst: add SSL_CERT/SSL_KEY detection to
      postconf section (was formerly initialized at the now dropped key setup)
    - d/mail-stack-delivery.postinst: fix SSL_CERT/SSL_KEY detection to only
      read non-comments from the right keywords and to strip common bad-chars
    - d/mail-stack-delivery.postinst: stop modifying mandatory tls config,
      recent upstream has sane defaults now
    - debian/99-mail-stack-delivery.conf: drop explicit ssl_cipher_list,
      recent upstream has sane defaults now
  * Added Changes:
    - carry mail-stack-delivery as empty transitional package
      (can be dropped >20.04)

dovecot (1:2.2.35-2) unstable; urgency=medium

  * [7665652] Use git-subtree to generate pigeonhole patch from git; add
    single-debian-patch to d/source/local...