- simplify functions name in mariadb.sh helper script
- adapt mariabackup plugin systemtest to new mariadb helper functions
- fix typo in plugin description
- introduce new defaults-file in testrunner: mariadbdefaults.in
- adapt copyright year

mariadb-dump aims to replace obsolete mysql on systems
with MariaDB binaries, due to the deprecated aliases of `mysql*`
commands

- use unify plugin way with new name
- add debug init message
- add python version check
- use fstring everywhere
- systemtests: create new py3plug-fd-contrib-mariadb-dump
- update documentation
- update module description
- fix port aliases in systemtest configuration
- cmake: improve testing and messages

Signed-off-by: Bruno Friedmann <bruno.friedmann@bareos.com>

This contrib module help to run task on mariadb cluster.

- add systemtests fd-contrib_bareos_task_mariadb
- split test to have setup,cleanup,default
- simplify number of tests, incremental can be skipped dump operation
  are always full

Install unconditionally mariadb and mysql.
Only the systemtests has to be filtered depending on the availability
of the binaries.

- remove unused pools definitions
- use run_bconsole instead run_bareos
- add incremental data in the db and rerun a full job
- add more messages during tests

- remove unused pools,filesets definitions
- run only full backup
- use run_bconsole instead run_bareos
- add incremental data in the db and rerun a full job
- use Full pool in restore job

Adapt python module to newer syntax compatible with grpc testing.

- add new section about MariaDB backup in section
  `Backup Of Third Party Databases`
- move MySQL in last, add legacy terms
- renew indexes

Signed-off-by: Bruno Friedmann <bruno.friedmann@bareos.com>

Co-authored-by: Sebastian Sura <124262655+sebsura@users.noreply.github.com>

Signed-off-by: Bruno Friedmann <bruno.friedmann@bareos.com>

- add comment to specify why it is always a full
- make log naming consistent

- Review and rework ThirdPartyDatabases section for mariad-dump
  plugin, adding missing options and example how to use them.
- Empty almost all content of README and add a link to corresponding
  documentation section.
- Fix typo in plugin comment

- add note in headers about dump done in memory
- import shlex and use shlex.split for command line calls
- move `--databases` default flag in defaults dumpoptions
- retrieve and format db size for statp.st_size
- enclose Popen call in try/except block
- improve and format Job and Debug messages

- fix issue#2148 take into account usage of mycnf parameter
- improve a little debug messages
- simplify systemtest fileset

- use shlex.split also for getting size db command
- testrunner-default stop bareos & mariadb in case of errors