Most of these SQL files are used to mysql_install_db to initiate a new
database, so therefore they belong to the -core package.

Turns out recent versions of MariaDB need resolveip to bootstrap the
database. Therefore this binary must be shipped as part of the -core
package.

Example of command that fails without resolveip:
  /usr/bin/mysql_install_db --defaults-file= --force \
  --basedir=/usr --datadir=db_data/

Use upstream conf defaults (Closes: #905599)

See merge request !12

This makes the resulting pipeline view easier to read, and in case
of failures less excess tests are run.

For details see:
salsa-ci-team/pipeline#27

This ensures backwards compatiblity with libmysqlclient-dev.

Anything that builds against libmariadb-dev expects to have libgnutls28-dev
also available because libmariadb3 has these compilation flags:

pkg-config --libs libmariadb
-L/usr/lib/x86_64-linux-gnu/ -lmariadb -lz -ldl -lm -lpthread -lgnutls

Fixes regression introduced by changes in commit 6b1f48b3.

Remove from libmariadb-dev and add to many others according to suggestions
by the MultiArch hinter.

It has been disputed whether MySQL and MariaDB can license-wise use
OpenSSL or not. Building with '-DWITH_SSL=bundled' makes the server use
YaSSL and the Connector/C use GnuTLS.

Once OpenSSL 3.0 is released, switch back to it.

Since OpenSSL is missing, libmariadb3 will lack the sha256_password plugin.

Update to upstream version '10.3.13'
with Debian dir 3b0e262fb328aa77d2ba203b13db383b324fedc6

Remove upgrade tests from src:mariadb-10.1 and src:mariadb-connector-c
based binaries since they are no longer available in testing.

Decrease build artifacts expire time to 90 days as it should be enough.

Remove artifacts expires from tests and let them expire according to
what is defined as Gitlab default values.

This reverts commit feee9615.

The symlink /usr/include/mysql/ -> /usr/include/mariadb/ is already
shipped as part of libmariadb-dev-compat(.links).

Fixes the following error:
  dpkg: error processing archive libmariadb-dev-compat_10.3.12-2_amd64.deb
  (--unpack):
    trying to overwrite '/usr/bin/mysql_config', which is also in package
    libmariadbclient-dev 1:10.1.37-3

Complements commit dbb4099a
Needs to be versioned because of 74733c68

for smooth upgrades from libmariadbclient-dev/stretch to
libmariadb-dev/buster

See https://salsa.debian.org/salsa-ci-team/pipeline/tree/master/salsa-ci.yml